<style>

 .div1 {

     width: 200px;

     height: 200px;

     background: red url(img/user.png) no-repeat;

     text-overflow: ellipsis;

     white-space: nowrap;

     overflow: hidden;

 }

 .div1:hover {

     overflow: visible;

     text-overflow: inherit;

 }

 </style>

 <div class="div1">

         qwe Lorem ipsum dolor sit amet, consectetur adipisicing elit. Recusandae voluptatem sapiente fuga facere molestias numquam officiis beatae ex sit atque aspernatur quisquam commodi ratione perspiciatis ducimus dolor minima itaque obcaecati!

 </div>

 p{display: -webkit-box;

 -webkit-box-orient: vertical;

 -webkit-line-clamp: ;

 overflow: hidden;

 }

 p{

   position: relative;

   line-height: 20px;

   max-height: 40px; /*是行高的整数倍，防止下行文字露出*/

   overflow: hidden;

 }

 p::after{

   content: "..."; position: absolute; bottom: ; right: ; padding-left: 40px;

   background: -webkit-linear-gradient(left, transparent, #fff %);

   background: -o-linear-gradient(right, transparent, #fff %);

   background: -moz-linear-gradient(right, transparent, #fff %);

   background: linear-gradient(to right, transparent, #fff %);

 }