CSS `border-bottom-width` ããããã£

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border-bottom-width ã¯ CSS ã®ããããã£ã§ãããã¯ã¹ã®ä¸ã®å¢çã®å¹ãè¨å®ãã¾ãã

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border-bottom-width: thick;

border-bottom-width: 2em;

border-bottom-width: 4px;

border-bottom-width: 2ex;

border-bottom-width: 0;

<section class="default-example" id="default-example">
  <div class="transition-all" id="example-element">
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  </div>
</section>

#example-element {
  background-color: palegreen;
  color: black;
  border: 0 solid crimson;
  padding: 0.75em;
  width: 80%;
  height: 100px;
}

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css

/* ãã¼ã¯ã¼ãå¤ */
border-bottom-width: thin;
border-bottom-width: medium;
border-bottom-width: thick;

/* <length> å¤ */
border-bottom-width: 10em;
border-bottom-width: 3vmax;
border-bottom-width: 6px;

/* ã°ãã¼ãã«ãã¼ã¯ã¼ã */
border-bottom-width: inherit;
border-bottom-width: initial;
border-bottom-width: revert;
border-bottom-width: revert-layer;
border-bottom-width: unset;

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<line-width>

thin
- 1px ã¨åãã§ãã
medium
- 3px ã¨åãã§ãã
thick
- 5px ã¨åãã§ãã

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åæå¤	`medium`
é©ç¨å¯¾è±¡	ãã¹ã¦ã®è¦ç´ ã `::first-letter` ã«ãé©ç¨ããã¾ãã
ç¶æ¿	ãªã
è¨ç®å¤	the absolute `<length>`, snapped as a line width
ã¢ãã¡ã¼ã·ã§ã³ã®ç¨®é¡	length

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border-bottom-width = 
  <line-width>  

<line-width> = 
  <length [0,â]>  |
  hairline        |
  thin            |
  medium          |
  thick

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HTML

html

<div>è¦ç´  1</div>
<div>è¦ç´  2</div>

CSS

css

div {
  border: 1px solid red;
  margin: 1em 0;
}

div:nth-child(1) {
  border-bottom-width: thick;
}
div:nth-child(2) {
  border-bottom-width: 2em;
}