css浮动怎么写

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS Float Example</title>
<style>
  .container {
    width: 400px;
    border: 1px solid black;
  }
  .float-left {
    float: left;
    width: 100px;
    height: 100px;
    background-color: red;
  }
  .float-right {
    float: right;
    width: 100px;
    height: 100px;
    background-color: blue;
  }
  .clear {
    clear: both;
  }
</style>
</head>
<body>

<div class="container">
  <div class="float-left"></div>
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
  <div class="float-right"></div>
  <p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
  <div class="clear"></div>
  <p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.</p>
</div>

</body>
</html>

.container {
  overflow: hidden;
}

<div class="clear"></div>

.clear {
  clear: both;
}

.container::after {
  content: "";
  display: table;
  clear: both;
}