<style>
.div1{
background-color:yellow;
width:100px;
/*以下div将多的字符用省略号截取*/
text-overflow : ellipsis;
overflow:hidden;
/*以上div将多的字符用省略号截取*/
}
</style>
<div class="div1">
1234657890ABCDEFGHIJKLMNOPQRSTUVWXYZ
</div>