文本过长只显示两行，最后一行超出隐藏并显示省略号
效果如图：
代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div>qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq</div>
</body>
<style>
div{
width: 200px;
overflow:hidden;
word-wrap: break-word;
text-overflow:ellipsis;
display:-webkit-box;
-webkit-box-orient:vertical;
-webkit-line-clamp:2;
}
</style>
</html>-webkit-line-clamp:2; 可以控制显示多少行。
如果要求显示一行有简单的写法：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div>qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq</div>
</body>
<style>
div{
width: 200px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
</style>
</html>