单行:
white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
word-break: break-all;
多行:
display: -webkit-box;
-webkit-box-orient: vertical;
-webkit-line-clamp: 3;
overflow: hidden;
display: -webkit-box;
-webkit-box-orient: vertical;
-webkit-line-clamp: 3;
overflow: hidden;