css设置单行多行超出显示省略号

单行:

width: 200px;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;

多行:

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