box-shadow的属性的探究-CFANZ编程社区

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>body {
      padding: 20px 40px;
    }

    .box {
      margin-top: 40px;
      width: 200px;
      height: 80px;
      line-height: 80px;
      border-radius: 5px;
      text-align: center;
      border: 1px solid #f2f2f2;
    }

    .box:nth-of-type(1) {
      box-shadow: 20px 10px yellowgreen;
    }

    .box:nth-of-type(2) {
      box-shadow: 20px 10px 5px yellowgreen;
    }

    .box:nth-of-type(3) {
      box-shadow: 20px 10px 5px 8px yellowgreen;
    }

    .box:nth-of-type(4) {
      box-shadow: 5px 5px 12px 0 yellowgreen inset;
    }

    .divider {
      margin: 30px 0;
      width: 100%;
      height: 1px;
      background-color: #b4bcc9;
    }

    .wrapper {
      margin-bottom: 15px;
      display: flex;
    }

    .header {
      font-size: 17px;
      font-weight: 600;
      margin-top: 35px;
    }

    .wrapper div {
      width: 120px;
      height: 120px;
      background-color: #ffa600;
      border-radius: 5px;
      margin-right: 150px;
    }

    .offset-x div:nth-of-type(1) {
      box-shadow: 20px 0px 10px 0px rgba(0, 0, 0, 0.5);
    }

    .offset-x div:nth-of-type(2) {
      box-shadow: -20px 0px 10px 0px rgba(0, 0, 0, 0.5);
    }

    .offset-y div:nth-of-type(1) {
      box-shadow: 0px 20px 10px 0px rgba(0, 0, 0, 0.5);
    }

    .offset-y div:nth-of-type(2) {
      box-shadow: 0px -20px 10px 0px rgba(0, 0, 0, 0.5);
    }

    .blur div:nth-of-type(1) {
      box-shadow: 0px 0px 0px 0px rgba(0, 0, 0, 0.5)
    }

    .blur div:nth-of-type(2) {
      box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.5)
    }

    .blur div:nth-of-type(3) {
      box-shadow: 0px 0px 50px 0px rgba(0, 0, 0, 0.5)
    }

    .spread div:nth-of-type(1) {
      box-shadow: 0px 0px 0px 0px rgba(0, 0, 0, 0.5)
    }
    .spread div:nth-of-type(2) {
      box-shadow: 0px 0px 20px 20px rgba(0, 0, 0, 0.5)
    }
    .spread div:nth-of-type(3) {
      box-shadow: 0px 0px 50px 50px rgba(0, 0, 0, 0.5)
    }

    .color div:nth-of-type(1) {
      box-shadow: 0px 0px 20px 10px #e00798
    }
    .color div:nth-of-type(2) {
      box-shadow: 0px 0px 20px 10px rgba(0,0,0,0.5) 
    }

    .position div:nth-of-type(1) {
      box-shadow: 0px 0px 20px 10px #1a2bc7;
      text-align: center;
      line-height: 120px;
    }
    .position div:nth-of-type(2) {
      box-shadow: 0px 0px 20px 10px rgba(0,0,0,0.5) inset;
      text-align: center;
      line-height: 120px;
    }

    .mult div:nth-of-type(1) {
      box-shadow: 0px 10px 10px #1a2bc7, -8px -5px 16px #e70764, 10px 0px 10px #3007e7;
    }</style>
</head>

<body>
  <h1>css box-shadow</h1>
  <p class="attr">
    box-shadow: h-shadow(水平) v-shadow(垂直) blur(模糊距离) spread(阴影尺寸) color(阴影颜色) inset(将默认外部阴影改为内部阴影);
  </p>

  <p class="attr">
    box-shadow属性由5部分组成: offset-x offset-y blur spread color position。
  </p>

  <div class="box">
    I am a box!
  </div>

  <div class="box">
    I am a box!
    模糊距离
  </div>

  <div class="box">
    I am a box!
    阴影尺寸
  </div>

  <div class="box">
    I am a box!
    内部阴影
  </div>

  <div class="divider"></div>

  <p>
    box-shadow: offset-x offset-y blur spread color position;
  </p>

  <p class="header">offset-x 阴影水平方向的偏移</p>
  <div class="wrapper offset-x">
    <div></div>
    <div></div>
  </div>

  <p class="header">offset-y 阴影竖直方向的偏移</p>
  <div class="wrapper offset-y">
    <div></div>
    <div></div>
  </div>

  <p class="header">blur 模糊半径</p>
  <div class="wrapper blur">
    <div></div>
    <div></div>
    <div></div>
  </div>

  <p class="header">spread 阴影扩展半径，其值可以是正负值，如果值为正，则整个阴影都延展扩大，反之值为负值是，则缩小</p>
  <div class="wrapper spread">
    <div></div>
    <div></div>
    <div></div>
  </div>

  <p class="header">color 阴影的颜色</p>
  <div class="wrapper color">
    <div></div>
    <div></div>
  </div>

  <p class="header">position 不设值，其默认的投影方式是外阴影；设置阴影类型为“inset”时，其投影就是内阴影</p>
  <div class="wrapper position">
    <div>外阴影</div>
    <div>内阴影</div>
  </div>

  <div class="divider"></div>

  <p>多个box-shadow值叠加</p>
  <div class="wrapper mult">
    <div></div>
  </div>
</body>

</html>
box-shadow的属性的探究_css