关键样式：
white-space:nowrap;/*内容横向排列不换行*/
overflow-x:auto; overflow-y:hidden;/*隐藏溢出部分。横向滚动条自动出现，纵向滚动条隐藏*/
预览代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta. http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>css实现图片横向排列，溢出隐藏横向滚动</title>
<style. type="text/css">
<!--
.inimg {width:670px;height:395px;white-space:nowrap;overflow-x:auto;overflow-y:hidden;}
.inimg img {width:670px;height:375px;}
-->
</style>
</head>
<body>
<div class="inimg">
<img src="" width="670" height="375" alt="img" />
<img src="" width="670" height="375" alt="img" />
<img src="" width="670" height="375" alt="img" />
<img src="" width="670" height="375" alt="img" />
</div>
</body>
</html>