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Code  ›  子组合器 - CSS：层叠样式表 | MDN
border css选择器 css第一个元素 css
https://developer.mozilla.org/zh-CN/docs/Web/CSS/Child_combinator
有腹肌的火锅
10 月前

子组合器 （ > ）被放在两个 CSS 选择器之间。它只匹配那些被第二个选择器匹配的元素，这些元素是被第一个选择器匹配的元素的直接子元素。

css 
/* 选择属于“my-things”类的无序列表（ul）的直接子列表元素（li） */
ul.my-things > li {
  margin: 2em;

被第二个选择器匹配的元素必须是被第一个选择器匹配的元素的直接子元素。这比后代组合器更严格，后者匹配所有被第二个选择器匹配的元素，这些元素存在被第一个选择器匹配的祖先元素，无论在 DOM 上有多少“跳”。

      
  1. CSS
  2. CSS 参考
  3. 模块
    1. CSS anchor positioning
    2. CSS 动画
    3. CSS 背景和边框
    4. CSS Basic User Interface
    5. CSS borders and box decorations
    6. CSS 盒子对齐
    7. CSS 基础框盒模型
    8. CSS box sizing
    9. CSS cascading and inheritance
    10. CSS 颜色调整
    11. CSS 颜色
    12. CSS compositing and blending
    13. CSS conditional rules
    14. CSS 局限
    15. CSS 计数器样式
    16. CSS custom functions and mixins
    17. CSS custom highlight API
    18. CSS custom properties for cascading variables
    19. CSS display
    20. CSS easing functions
    21. CSS environment variables
    22. CSS filter effects
    23. CSS 弹性盒子布局
    24. CSS font loading
    25. CSS 字体
    26. CSS 片段
    27. CSS 生成内容
    28. 网格布局
    29. CSS images
    30. CSS inline layout
    31. CSS 列表与计数器
    32. CSS 逻辑属性与逻辑值
    33. CSS Masking
    34. 媒体查询
    35. CSS motion path
    36. CSS 多列布局
    37. CSS namespaces
    38. CSS 嵌套
    39. CSS overflow
    40. CSS overscroll behavior
    41. CSS 分页媒体
    42. CSS 定位布局
    43. CSS properties and values API
    44. CSS pseudo-elements
    45. CSS round display
    46. CSS ruby layout
    47. CSS scoping
    48. CSS scroll anchoring
    49. CSS 滚动吸附
    50. CSS scroll-driven animations
    51. CSS Scrollbars
    52. CSS 选择器
    53. CSS 影子部件
    54. CSS 形状
    55. CSS syntax
    56. CSS Table
    57. CSS 文本
    58. CSS 文本装饰
    59. CSS Transforms
    60. CSS 过渡
    61. CSS 值和单位
    62. CSS 视图过渡
    63. CSS viewport
    64. CSS 书写模式
    65. CSS 对象模型视图
  4. 属性
    1. -moz-*
      1. -moz-float-edge

      2. -moz-force-broken-image-icon

      3. -moz-orient

      4. -moz-user-focus

      5. -moz-user-input

    2. -webkit-*
      1. -webkit-border-before

      2. -webkit-box-reflect

      3. -webkit-mask-box-image

      4. -webkit-mask-composite

      5. -webkit-mask-position-x

      6. -webkit-mask-position-y

      7. -webkit-mask-repeat-x

      8. -webkit-mask-repeat-y

      9. -webkit-tap-highlight-color

      10. -webkit-text-fill-color
      11. -webkit-text-security

      12. -webkit-text-stroke
      13. -webkit-text-stroke-color
      14. -webkit-text-stroke-width
      15. -webkit-touch-callout

    3. 自定义属性（--*）：CSS 变量
    4. accent-color
    5. align-*
      1. align-content
      2. align-items
      3. align-self
    6. alignment-baseline
    7. all
    8. anchor-name
    9. animation-*
      1. animation
      2. animation-composition
      3. animation-delay
      4. animation-direction
      5. animation-duration
      6. animation-fill-mode
      7. animation-iteration-count
      8. animation-name
      9. animation-play-state
      10. animation-range
      11. animation-range-end
      12. animation-range-start
      13. animation-timeline
      14. animation-timing-function
    10. appearance
    11. aspect-ratio
    12. backdrop-filter
    13. backface-visibility
    14. background-*
      1. background
      2. background-attachment
      3. background-blend-mode
      4. background-clip
      5. background-color
      6. background-image
      7. background-origin
      8. background-position
      9. background-position-x
      10. background-position-y
      11. background-repeat
      12. background-size
    15. block-size
    16. border-*
      1. border
      2. border-block
      3. border-block-color
      4. border-block-end
      5. border-block-end-color
      6. border-block-end-style
      7. border-block-end-width
      8. border-block-start
      9. border-block-start-color
      10. border-block-start-style
      11. border-block-start-width
      12. border-block-style
      13. border-block-width
      14. border-bottom
      15. border-bottom-color
      16. border-bottom-left-radius
      17. border-bottom-right-radius
      18. border-bottom-style
      19. border-bottom-width
      20. border-collapse
      21. border-color
      22. border-end-end-radius
      23. border-end-start-radius
      24. border-image
      25. border-image-outset
      26. border-image-repeat
      27. border-image-slice
      28. border-image-source
      29. border-image-width
      30. border-inline
      31. border-inline-color
      32. border-inline-end
      33. border-inline-end-color
      34. border-inline-end-style
      35. border-inline-end-width
      36. border-inline-start
      37. border-inline-start-color
      38. border-inline-start-style
      39. border-inline-start-width
      40. border-inline-style
      41. border-inline-width
      42. border-left
      43. border-left-color
      44. border-left-style
      45. border-left-width
      46. border-radius
      47. border-right
      48. border-right-color
      49. border-right-style
      50. border-right-width
      51. border-spacing
      52. border-start-end-radius
      53. border-start-start-radius
      54. border-style
      55. border-top
      56. border-top-color
      57. border-top-left-radius
      58. border-top-right-radius
      59. border-top-style
      60. border-top-width
      61. border-width
    17. bottom
    18. box-*
      1. box-align

      2. box-decoration-break
      3. box-direction

      4. box-flex

      5. box-flex-group

      6. box-lines

      7. box-ordinal-group

      8. box-orient

      9. box-pack

      10. box-shadow
      11. box-sizing
    19. break-*




    

      1. break-after
      2. break-before
      3. break-inside
    20. caption-side
    21. caret-*
      1. caret

      2. caret-animation

      3. caret-color
      4. caret-shape

    22. clear
    23. clip-*
      1. clip

      2. clip-path
      3. clip-rule
    24. color-*
      1. color
      2. color-interpolation
      3. color-interpolation-filters
      4. color-scheme
    25. column-*
      1. column-count
      2. column-fill
      3. column-gap
      4. column-rule
      5. column-rule-color
      6. column-rule-style
      7. column-rule-width
      8. column-span
      9. column-width
    26. columns
    27. contain-*
      1. contain
      2. contain-intrinsic-block-size
      3. contain-intrinsic-height
      4. contain-intrinsic-inline-size
      5. contain-intrinsic-size
      6. contain-intrinsic-width
    28. container-*
      1. container
      2. container-name
      3. container-type
    29. content
    30. content-visibility
    31. corner-*
      1. corner-block-end-shape

      2. corner-block-start-shape

      3. corner-bottom-left-shape

      4. corner-bottom-right-shape

      5. corner-bottom-shape

      6. corner-end-end-shape

      7. corner-end-start-shape

      8. corner-inline-end-shape

      9. corner-inline-start-shape

      10. corner-left-shape

      11. corner-right-shape

      12. corner-shape

      13. corner-start-end-shape

      14. corner-start-start-shape

      15. corner-top-left-shape

      16. corner-top-right-shape

      17. corner-top-shape

    32. counter-*
      1. counter-increment
      2. counter-reset
      3. counter-set
    33. cursor
    34. cx
    35. cy
    36. d
    37. direction
    38. display
    39. dominant-baseline
    40. dynamic-range-limit
    41. empty-cells
    42. field-sizing

    43. fill-*
      1. fill
      2. fill-opacity
      3. fill-rule
    44. filter
    45. flex-*
      1. flex
      2. flex-basis
      3. flex-direction
      4. flex-flow
      5. flex-grow
      6. flex-shrink
      7. flex-wrap
    46. float
    47. flood-color
    48. flood-opacity
    49. font-*
      1. font
      2. font-family
      3. font-feature-settings
      4. font-kerning
      5. font-language-override
      6. font-optical-sizing
      7. font-palette
      8. font-size
      9. font-size-adjust
      10. font-smooth

      11. font-stretch

      12. font-style
      13. font-synthesis
      14. font-synthesis-position

      15. font-synthesis-small-caps
      16. font-synthesis-style
      17. font-synthesis-weight
      18. font-variant
      19. font-variant-alternates
      20. font-variant-caps
      21. font-variant-east-asian
      22. font-variant-emoji
      23. font-variant-ligatures
      24. font-variant-numeric
      25. font-variant-position
      26. font-variation-settings
      27. font-weight
    50. forced-color-adjust
    51. gap
    52. grid-*
      1. grid
      2. grid-area
      3. grid-auto-columns
      4. grid-auto-flow
      5. grid-auto-rows
      6. grid-column
      7. grid-column-end
      8. grid-column-start
      9. grid-row
      10. grid-row-end
      11. grid-row-start
      12. grid-template
      13. grid-template-areas
      14. grid-template-columns
      15. grid-template-rows
    53. hanging-punctuation
    54. height
    55. hyphenate-character
    56. hyphenate-limit-chars
    57. hyphens
    58. image-*
      1. image-orientation
      2. image-rendering
      3. image-resolution

    59. initial-letter
    60. inline-size
    61. inset-*
      1. inset
      2. inset-block
      3. inset-block-end
      4. inset-block-start
      5. inset-inline
      6. inset-inline-end
      7. inset-inline-start
    62. interpolate-size

    63. isolation
    64. justify-*
      1. justify-content
      2. justify-items
      3. justify-self
    65. left
    66. letter-spacing
    67. lighting-color
    68. line-*
      1. line-break
      2. line-clamp
      3. line-height
      4. line-height-step

    69. list-*
      1. list-style
      2. list-style-image
      3. list-style-position
      4. list-style-type
    70. margin-*
      1. margin
      2. margin-block
      3. margin-block-end
      4. margin-block-start
      5. margin-bottom
      6. margin-inline
      7. margin-inline-end
      8. margin-inline-start
      9. margin-left
      10. margin-right
      11. margin-top
      12. margin-trim

    71. marker-*
      1. marker
      2. marker-end
      3. marker-mid
      4. marker-start
    72. mask-*
      1. mask
      2. mask-border
      3. mask-border-mode
      4. mask-border-outset
      5. mask-border-repeat
      6. mask-border-slice
      7. mask-border-source
      8. mask-border-width
      9. mask-clip
      10. mask-composite
      11. mask-image
      12. mask-mode
      13. mask-origin
      14. mask-position
      15. mask-repeat
      16. mask-size
      17. mask-type
    73. math-*




    

      1. math-depth
      2. math-shift

      3. math-style
    74. max-*
      1. max-block-size
      2. max-height
      3. max-inline-size
      4. max-width
    75. min-*
      1. min-block-size
      2. min-height
      3. min-inline-size
      4. min-width
    76. mix-blend-mode
    77. object-*
      1. object-fit
      2. object-position
      3. object-view-box

    78. offset-*
      1. offset
      2. offset-anchor
      3. offset-distance
      4. offset-path
      5. offset-position
      6. offset-rotate
    79. opacity
    80. order
    81. orphans
    82. outline-*
      1. outline
      2. outline-color
      3. outline-offset
      4. outline-style
      5. outline-width
    83. overflow-*
      1. overflow
      2. overflow-anchor
      3. overflow-block
      4. overflow-clip-margin
      5. overflow-inline
      6. overflow-wrap
      7. overflow-x
      8. overflow-y
    84. overlay

    85. overscroll-*
      1. overscroll-behavior
      2. overscroll-behavior-block
      3. overscroll-behavior-inline
      4. overscroll-behavior-x
      5. overscroll-behavior-y
    86. padding-*
      1. padding
      2. padding-block
      3. padding-block-end
      4. padding-block-start
      5. padding-bottom
      6. padding-inline
      7. padding-inline-end
      8. padding-inline-start
      9. padding-left
      10. padding-right
      11. padding-top
    87. page-*
      1. page
      2. page-break-after

      3. page-break-before

      4. page-break-inside

    88. paint-order
    89. perspective
    90. perspective-origin
    91. place-*
      1. place-content
      2. place-items
      3. place-self
    92. pointer-events
    93. position-*
      1. position
      2. position-anchor
      3. position-area
      4. position-try
      5. position-try-fallbacks
      6. position-try-order
      7. position-visibility

    94. print-color-adjust
    95. quotes
    96. r
    97. reading-flow

    98. reading-order

    99. resize
    100. right
    101. rotate
    102. row-gap
    103. ruby-*
      1. ruby-align
      2. ruby-overhang
      3. ruby-position
    104. rx
    105. ry
    106. scale
    107. scroll-*
      1. scroll-behavior
      2. scroll-margin
      3. scroll-margin-block
      4. scroll-margin-block-end
      5. scroll-margin-block-start
      6. scroll-margin-bottom
      7. scroll-margin-inline
      8. scroll-margin-inline-end
      9. scroll-margin-inline-start
      10. scroll-margin-left
      11. scroll-margin-right
      12. scroll-margin-top
      13. scroll-marker-group

      14. scroll-padding
      15. scroll-padding-block
      16. scroll-padding-block-end
      17. scroll-padding-block-start
      18. scroll-padding-bottom
      19. scroll-padding-inline
      20. scroll-padding-inline-end
      21. scroll-padding-inline-start
      22. scroll-padding-left
      23. scroll-padding-right
      24. scroll-padding-top
      25. scroll-snap-align
      26. scroll-snap-stop
      27. scroll-snap-type
      28. scroll-target-group

      29. scroll-timeline
      30. scroll-timeline-axis
      31. scroll-timeline-name
    108. scrollbar-*
      1. scrollbar-color
      2. scrollbar-gutter
      3. scrollbar-width
    109. shape-*
      1. shape-image-threshold
      2. shape-margin
      3. shape-outside
      4. shape-rendering
    110. speak-as

    111. stop-color
    112. stop-opacity
    113. stroke-*
      1. stroke
      2. stroke-dasharray
      3. stroke-dashoffset
      4. stroke-linecap
      5. stroke-linejoin
      6. stroke-miterlimit
      7. stroke-opacity
      8. stroke-width
    114. tab-size
    115. table-layout
    116. text-*
      1. text-align
      2. text-align-last
      3. text-anchor
      4. text-autospace
      5. text-box
      6. text-box-edge
      7. text-box-trim
      8. text-combine-upright
      9. text-decoration
      10. text-decoration-color
      11. text-decoration-line
      12. text-decoration-skip

      13. text-decoration-skip-ink
      14. text-decoration-style
      15. 文本装饰线厚度 (粗细)
      16. text-emphasis
      17. text-emphasis-color
      18. text-emphasis-position
      19. text-emphasis-style
      20. text-indent
      21. text-justify
      22. text-orientation
      23. text-overflow
      24. 文本渲染
      25. text-shadow
      26. text-size-adjust

      27. text-spacing-trim

      28. text-transform
      29. text-underline-offset
      30. text-underline-position
      31. text-wrap
      32. text-wrap-mode
      33. text-wrap-style
    117. timeline-scope
    118. top
    119. touch-action
    120. transform-*
      1. transform
      2. transform-box
      3. transform-origin
      4. transform-style
    121. transition-*
      1. transition
      2. transition-behavior
      3. transition-delay
      4. transition-duration
      5. transition-property
      6. transition-timing-function
    122. translate
    123. unicode-bidi
    124. user-modify

    125. user-select
    126. vector-effect
    127. vertical-align
    128. view-*
      1. view-timeline
      2. view-timeline-axis
      3. view-timeline-inset
      4. view-timeline-name
      5. view-transition-class
      6. view-transition-name
    129. visibility
    130. white-space
    131. white-space-collapse
    132. widows
    133. width
    134. will-change
    135. word-break
    136. word-spacing
    137. writing-mode
    138. x
    139. y
    140. z-index
    141. zoom
  5. 选择器




    

    1. & 嵌套选择器
    2. 属性选择器
    3. 类选择器
    4. ID 选择器
    5. 类型选择器
    6. 通配选择器
  6. 关系选择器
    1. 子组合器
    2. 列组合器

    3. 后代选择器
    4. Namespace separator
    5. 接续兄弟组合器
    6. 选择器列表
    7. 后续兄弟选择器
  7. 伪类
    1. :-moz-*
      1. :-moz-broken

      2. :-moz-drag-over

      3. :-moz-first-node

      4. :-moz-handler-blocked

      5. :-moz-handler-crashed

      6. :-moz-handler-disabled

      7. :-moz-last-node

      8. :-moz-loading

      9. :-moz-locale-dir(ltr)

      10. :-moz-locale-dir(rtl)

      11. :blank

      12. :-moz-submit-invalid

      13. :-moz-suppressed

      14. :-moz-user-disabled

      15. :-moz-window-inactive

    2. :active
    3. :active-view-transition
    4. :any-link
    5. :autofill
    6. :blank

    7. :buffering
    8. :checked
    9. :current

    10. :default
    11. :defined
    12. :dir()
    13. :disabled
    14. :empty
    15. :enabled
    16. :first-*
      1. :first
      2. :first-child
      3. :first-of-type
    17. :focus-*
      1. :focus
      2. :focus-visible
      3. :focus-within
    18. :fullscreen
    19. :future
    20. :has-slotted
    21. :has()
    22. :heading

    23. :heading()

    24. :host
    25. :host-context()

    26. :host()
    27. :hover
    28. :in-range
    29. :indeterminate
    30. :invalid
    31. :is()
    32. :lang()
    33. :last-child
    34. :last-of-type
    35. :left
    36. :link
    37. :local-link

    38. :modal
    39. :muted
    40. :not()
    41. :nth-*
      1. :nth-child()
      2. :nth-last-child
      3. :nth-last-of-type
      4. :nth-of-type
    42. :only-child
    43. :only-of-type
    44. :open
    45. :optional
    46. :out-of-range
    47. :past
    48. :paused
    49. :picture-in-picture
    50. :placeholder-shown
    51. :playing
    52. :popover-open
    53. :read-only
    54. :read-write
    55. :required
    56. :right
    57. :root
    58. :scope
    59. :seeking
    60. :stalled
    61. :state()
    62. :target
    63. :target-current

    64. :user-invalid
    65. :user-valid
    66. :valid
    67. :visited
    68. :volume-locked
    69. :where()
  8. 伪元素
    1. ::-moz-*
      1. ::-moz-color-swatch

      2. ::-moz-focus-inner

      3. ::-moz-list-bullet

      4. ::-moz-list-number

      5. ::-moz-meter-bar

      6. ::-moz-progress-bar

      7. ::-moz-range-progress

      8. ::-moz-range-thumb

      9. ::-moz-range-track

    2. ::-webkit-*
      1. ::-webkit-inner-spin-button

      2. ::-webkit-meter-bar

      3. ::-webkit-meter-even-less-good-value

      4. ::-webkit-meter-inner-element

      5. ::-webkit-meter-optimum-value

      6. ::-webkit-meter-suboptimum-value

      7. ::-webkit-progress-bar

      8. ::-webkit-progress-inner-element

      9. ::-webkit-progress-value

      10. ::-webkit-scrollbar

      11. ::-webkit-search-cancel-button

      12. ::-webkit-search-results-button

      13. ::-webkit-slider-runnable-track

      14. ::-webkit-slider-thumb

    3. ::after
    4. ::backdrop
    5. ::before
    6. ::checkmark

    7. ::column

    8. ::cue (:cue)
    9. ::details-content
    10. ::file-selector-button
    11. ::first-letter
    12. ::first-line (:first-line)
    13. ::grammar-error
    14. ::highlight()
    15. ::marker
    16. ::part()
    17. ::picker-icon

    18. ::picker()

    19. ::placeholder
    20. ::scroll-*
      1. ::scroll-button()

      2. ::scroll-marker

      3. ::scroll-marker-group

    21. ::selection
    22. ::slotted()
    23. ::spelling-error
    24. ::target-text
    25. ::view-*
      1. ::view-transition
      2. ::view-transition-group
      3. ::view-transition-image-pair
      4. ::view-transition-new
      5. ::view-transition-old
  9. At 规则
    1. @charset
    2. @color-profile
    3. @container
    4. @counter-style
    5. @document

    6. @font-face
    7. @font-feature-values
    8. @font-palette-values
    9. @function
    10. @import
    11. @keyframes
    12. @layer
    13. @media
    14. @namespace
    15. @page
    16. @position-try
    17. @property
    18. @scope
    19. @starting-style
    20. @supports
    21. @view-transition
  10. 函数
    1. -moz-image-rect

    2. abs()
    3. acos()
    4. anchor-size()
    5. anchor()
    6. asin()
    7. atan()
    8. atan2()
    9. attr
    10. blur()
    11. brightness()
    12. calc-size()

    13. calc()
    14. circle()
    15. clamp()
    16. color-mix()
    17. color()
    18. conic-gradient()
    19. contrast-color()

    20. contrast()
    21. cos()
    22. counter()
    23. counters()
    24. cross-fade()
    25. cubic-bezier()
    26. device-cmyk()
    27. drop-shadow()
    28. dynamic-range-limit-mix()

    29. element

    30. ellipse()
    31. env()
    32. exp()
    33. fit-content()
    34. grayscale()
    35. hsl()
    36. hue-rotate()
    37. hwb()
    38. hypot()
    39. if()

    40. image-set()
    41. image()
    42. inset()
    43. invert()
    44. lab()
    45. layer()
    46. lch()
    47. light-dark()
    48. linear-gradient()
    49. linear()
    50. log()
    51. matrix()
    52. matrix3d()
    53. max()
    54. min()
    55. minmax()
    56. mod()
    57. oklab()
    58. oklch()
    59. opacity()
    60. paint()
    61. palette-mix()

    62. path()
    63. perspective()
    64. polygon()
    65. pow()
    66. progress()

    67. radial-gradient()
    68. ray()
    69. rect()
    70. rem()
    71. repeat()
    72. repeating-conic-gradient()
    73. repeating-linear-gradient()
    74. repeating-radial-gradient()
    75. rgb()
    76. rotate()
    77. rotate3d()
    78. rotateX()
    79. rotateY()
    80. rotateZ()
    81. round()
    82. saturate()
    83. scale()
    84. scale3d()
    85. scaleX()
    86. scaleY()
    87. scaleZ()
    88. scroll()
    89. sepia()
    90. shape()
    91. sibling-count()

    92. sibling-index()

    93. sign()
    94. sin()
    95. skew()
    96. skewX()
    97. skewY()
    98. sqrt()
    99. steps()
    100. superellipse()

    101. symbols()
    102. tan()
    103. translate()
    104. translate3d()
    105. translateX()
    106. translateY()
    107. translateZ()
    108. type()
    109. url()
    110. var()
    111. view()
    112. xywh()
  11. 类型
    1. <absolute-size>
    2. <alpha-value>
    3. <angle-percentage>
    4. <angle>
    5. <baseline-position>
    6. <basic-shape>
    7. <blend-mode>
    8. <box-edge>
    9. <calc-keyword>
    10. <calc-sum>
    11. <color-interpolation-method>
    12. <color>
    13. <content-distribution>
    14. <content-position>
    15. <corner-shape-value>

    16. <custom-ident>
    17. <dashed-function>
    18. <dashed-ident>
    19. dimension
    20. <display-box>
    21. <display-inside>
    22. <display-internal>
    23. <display-legacy>
    24. <display-listitem>
    25. <display-outside>
    26. <easing-function>
    27. <filter-function>
    28. <flex>
    29. <frequency-percentage>
    30. <frequency>
    31. <generic-family>
    32. <gradient>
    33. <hex-color>
    34. <hue-interpolation-method>
    35. <hue>
    36. <ident>
    37. <image>
    38. <integer>
    39. <length-percentage>
    40. <length>
    41. <line-style>
    42. <named-color>
    43. <number>
    44. <overflow-position>
    45. <overflow>
    46. <percentage>
    47. <position-area>
    48. <position>
    49. <ratio>
    50. <relative-size>
    51. <resolution>
    52. <self-position>
    53. <shape>

    54. <string>
    55. <system-color>
    56. <text-edge>
    57. <time-percentage>
    58. <time>
    59. transform-function
    60. <url>
  12. 指南
  13. 锚点定位




    

    1. Using anchor positioning
    2. Handling overflow
  14. 动画
    1. 动画性 CSS 属性
    2. 使用 CSS 动画
  15. 背景和边框
    1. 多个背景的应用
    2. 调整背景图片的大小
    3. SVG 背景缩放
  16. 盒对齐
    1. Overview
    2. 块布局中的盒对齐方式
    3. 弹性盒布局中的盒对齐方式
    4. Box alignment in grid layout
    5. Box alignment in multi-column layout
  17. 盒模型
    1. CSS 基础框盒模型介绍
    2. 掌握外边距折叠
  18. 层叠
    1. CSS 层叠
    2. 继承
    3. 优先级
    4. 属性值处理
    5. CSS 的简写属性
  19. 自定义属性
    1. 使用 CSS 自定义属性（变量）
  20. 颜色
    1. 为 HTML 元素应用颜色
    2. Color values
    3. Using relative colors
    4. Using color wisely
    5. 无障碍：理解颜色和亮度
    6. Web 无障碍：色彩对比度
  21. 多列
    1. Basic Concepts of Multicol
    2. 多列布局的样式
    3. 使用 CSS 的多列布局
    4. Spanning and balancing columns
    5. 处理 Multicol 中的溢出
    6. Handling content breaks
  22. 条件规则
    1. 使用特性查询
    2. Using container scroll-state queries
  23. CSS 局限
    1. CSS 容器查询
    2. 使用 CSS 局限
    3. Using container size and style queries
  24. CSS 对象模型视图
    1. 坐标系
    2. 视口概念
  25. 流式布局
    1. 常规流中的块和内联布局
    2. CSS 流式布局
    3. 流式布局和溢出
    4. 流式布局和书写模式
    5. 应用或脱离流式布局
    6. 布局和包含块
    7. 格式化上下文
    8. 区块格式化上下文
    9. 行内格式化上下文
    10. Using multi-keyword syntax
    11. 视觉格式化模型
  26. 滤镜效果
    1. Using filter effects
  27. 弹性盒布局
    1. flex 布局的基本概念
    2. 弹性盒子与其他布局方法的联系
    3. 对齐弹性容器中的项目
    4. Flex 项排序
    5. 控制弹性元素在主轴上的比例
    6. 掌握弹性物件的包装
    7. 弹性盒子的典型用例
  28. 字体
    1. OpenType 字体特性指南
    2. Variable fonts guide
    3. Web 开放字体格式（WOFF）
  29. 网格布局
    1. 网格布局的基本概念
    2. 网格布局和其他布局方法的联系
    3. 网格模板区域
    4. CSS 网格中基于线的定位
    5. 使用命名线布局
    6. CSS 网格布局中的自动定位
    7. 网格布局中的盒模型对齐
    8. CSS 网格，逻辑值和书写模式
    9. 利用 CSS 网格布局实现常用布局
    10. Subgrid
    11. CSS 网格布局和无障碍
    12. Masonry layout

  30. 图片
    1. 使用 CSS 渐变
    2. 可替换元素
    3. 在 CSS 中实现图像合并
  31. 列表和计数器
    1. 使用 CSS 计数器
    2. 使列表缩进一致
  32. 逻辑属性
    1. 逻辑属性与逻辑值的基本概念
    2. 用于浮动和定位的逻辑属性
    3. 用于外边距、边框和内边距的逻辑属性
    4. 逻辑尺寸属性
  33. 媒体查询
    1. 使用媒体查询
    2. Using media queries for accessibility
    3. 使用编程方法测试媒体查询
    4. 打印
  34. 嵌套样式规则
    1. CSS at 规则嵌套
    2. CSS 嵌套与优先级
    3. 使用 CSS 嵌套
  35. 溢出
    1. Creating carousels
  36. 定位
    1. 层叠上下文
    2. 层叠与浮动
    3. 理解 CSS 的 z-index 属性
    4. 使用 z-index
    5. 堆叠时不使用 z-index 属性
  37. 滚动锚定
    1. Overview
  38. 滚动吸附
    1. 滚动吸附的基本概念
    2. Using scroll snap events
  39. 选择器
    1. 隐私与:visited 选择器
    2. Selector structure
    3. Selectors and combinators
    4. 在选择器中使用 :target 伪类
  40. 形状
    1. CSS 的图形（Shape）概览
    2. 使用 box 值指定形状
    3. Image-based shapes
    4. Using shape-outside
  41. 语法
    1. 语法
    2. CSS 注释
    3. At-rule functions
    4. Error handling
  42. 文本
    1. Wrapping and breaking text
    2. HTML、CSS 和 DOM 中的空白符是如何处理的
  43. Text decoration
    1. Text shadows
  44. 变换
    1. 使用 CSS 变换
  45. 过渡
    1. 使用 CSS 过渡
  46. 值和单位
    1. CSS 属性值定义语法
    2. Numeric data types
    3. Textual data types
    4. Using math functions
  47. CSS 布局手册
    1. 指南：媒体对象
    2. 列布局
    3. 居中一个元素
    4. 粘性页脚
    5. 分离式导航菜单
    6. 面包屑导航
    7. List group with badges
    8. Pagination
    9. 卡片
    10. Grid wrapper
  49. 工具
    1. Border-image 生成器
    2. 圆角边框生成器
    3. Box-shadow 生成器
    4. 色彩选择器
    5. 颜色混合器
    6. 形状生成器
 
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