CSS点击选中文本内容

CSS 属性 user-select 控制用户能否选中文本。

HTML代码：

<div class="wrapper">
  <h1>Here's Your Code Snippet!</h1>
  <p>Click below to select all. Click again to clear so you can select a portion of the snippet.</p>
<pre><code tabindex="0">function wall(x, y, width, height) {
  return Matter.Bodies.rectangle(x, y, width, height, {
    chamfer: { radius: 10 }
  });
}</code></pre>
</div>

CSS代码：

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  display: grid;
  align-items: center;
  justify-items: center;
  margin: 0;
  color: #5e3254;
  background-color: #dbe0e4;
  text-align: center;
  font: 1.25rem/1 'Rubik', sans-serif;
}

.wrapper {
  width: 650px;
  max-width: 100vw;
  padding: 5px 20px;
}

h1 {
  margin: 0 0 10px;
  font-size: 2.5rem;
}

p {
  margin: 0 0 20px;
  line-height: 1.25;
}

pre {
  margin: 0;
}

code {
  -webkit-user-select: all;
  user-select: all;
  display: block;
  padding: 20px;
  border: 2px dashed #c9baa7;
  color: #31808c;
  background-color: #f5f4ef;
  text-align: left;
  font: 0.85rem/1.5 'Roboto Mono', monospace;
  overflow: auto;
}

code:focus {
  border: 2px dashed #31808c;
  outline: none;
  animation: select 100ms step-end forwards;
}

@keyframes select {
  to {
    -webkit-user-select: text;
    user-select: text;
  }
}

查看DEMO