float 特性实现多行文本截断

.wrap {

  height: 40px;

  line-height: 20px;

  overflow: hidden;

}

.wrap .text {

  float: right;

  margin-left: -5px;

  width: 100%;

  word-break: break-all;

}

.wrap::before {

  float: left;

  width: 5px;

  content: '';

  height: 40px;

}

.wrap::after {

  float: right;

  text-align: right;

  content: "...";

  height: 20px;

  line-height: 20px;

  /* 为三个省略号的宽度 */

  width: 20px;

  /* 使盒子不占位置 */

  margin-left: -20px;

  background: -webkit-gradient(linear, left top, right top, from(rgba(255, 255, 255, 0)), to(white), color-stop(100%, white));

  background: -moz-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

  background: -o-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

  background: -ms-linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

  background: linear-gradient(to right, rgba(255, 255, 255, 0), white 50%, white);

  /* 移动省略号位置 */

  position: relative;

  left: 100%;

  top: -20px;

  padding-right: 5px;

}

<div class="wrap">

<div class="text">是不是也能输入中文来测试测试是不是也能输入中文来测试测试是不是也能输入中文来测试测试是不是也能输入中文来测试测试是不是也能输入中文来测试测试</div>

</div>