强制换行和不换行

//一行

white-space: nowrap;

text-overflow: ellipsis;

overflow: hidden;

word-break: break-all;

//多行

text-overflow: -o-ellipsis-lastline;

overflow: hidden;

text-overflow: ellipsis;

display: -webkit-box;

-webkit-line-clamp: 2;

line-clamp: 2;

-webkit-box-orient: vertical;