写HTML时把需要紧挨着的内联元素写在一行，设置其父容器的font-size为0，再设置内联元素的字体大小，例如：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
*{margin:0;padding:0;}
body{ color: #333 }
.demo{ overflow: hidden; font-size: 0 }
span{ display: inline-block; width: 100px; height: 100px; background-color: #ddd; border:1px solid #000; }
.demo span{ font-size: 16px; }
</style>
</head>
<body>
<div class="demo">
<span>设置内联元素写在一行</span>
<span>设置内联元素写在一行</span>
<span>设置内联元素写在一行</span>
<span>设置内联元素写在一行</span>
<span>设置内联元素写在一行</span>
<span>设置内联元素写在一行</span>
</div> </body>
</html>
如图显示: