用css画三角形-优快云博客

本文链接：https://blog.youkuaiyun.com/weixin_42596287/article/details/135776345

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .box {
      width: 0;
      height: 0;
      border: 100px solid;
      border-color: lightpink lightblue lightyellow lightgreen;
    }
    .arrow1 {
      width: 0;
      height: 0;
      border-top: 100px solid lightpink;
      border-left: 100px solid transparent;
      border-right: 100px solid transparent;
    }
    .arrow2 {
      width: 0;
      height: 0;
      border-bottom: 100px solid lightpink;
      border-left: 100px solid transparent;
      border-right: 100px solid transparent;
    }
    .arrow3 {
      width: 0;
      height: 0;
      border-left: 100px solid lightpink;
      border-top: 100px solid transparent;
      border-bottom: 100px solid transparent;
    }
    .arrow4 {
      width: 0;
      height: 0;
      border-right: 100px solid lightpink;
      border-top: 100px solid transparent;
      border-bottom: 100px solid transparent;
    }
    .arrow5 {
      width: 0;
      height: 0;
      border-top: 100px solid lightpink;
      border-left: 100px solid transparent;
    }
  </style>
</head>
<body>
  <!-- 这是设置不同方向的border显示的图，如果想要不同方向的三角形，可以分别设置，看下面几个 -->
  <div class="box"></div>
  <br />
  
  <!-- 只设置border-top -->
  <div class="arrow1"></div>
  <br />

  <!-- 只设置border-bottom -->
  <div class="arrow2"></div>
  <br />

  <!-- 只设置border-left -->
  <div class="arrow3"></div>
  <br />
  
  <!-- 只设置border-right -->
  <div class="arrow4"></div>
  <br />

  <!-- 调整方向和大小 -->
  <div class="arrow5"></div>
</body>
</html>

显示如图：