显示一行，省略号

white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
word-break: break-all;
padding:0px 5px;

显示两行，省略号

text-overflow: -o-ellipsis-lastline;
 overflow: hidden;
 text-overflow: ellipsis;
 display: -webkit-box;
 -webkit-line-clamp: 2;
 line-clamp: 2;
 -webkit-box-orient: vertical;
 padding:0px 5px;