纯css实现多行省略，末尾展示更多按钮

html代码片段：

### vue2 Template ###
<div class="wrapper">
    <input :id="`fold-btn-${id}`" class="exp" type="checkbox" />
    <div :ref="'workDetailRef' + id" class="text">
       <label class="btn" :for="`fold-btn-${id}`"></label>{{ workDetail }}
    </div>
</div>
          

css样式：

.wrapper {
  padding: 3px 8px;
  display: flex;
  width: 100%;
  overflow: hidden;
  background: #eee;
}
.text {
  font-size: 12px;
  color: #2c2c2c;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: justify;
  position: relative;
  line-height: 22px;
  max-height: 44px;
  transition: 0.3s max-height;
}
.text::before {
  content: '';
  height: calc(100% - 22px);
  float: right;
}
.text::after {
  content: '';
  width: 999vw;
  height: 999vw;
  position: absolute;
  box-shadow: inset calc(100px - 999vw) calc(20px - 999vw) 0 0 #eee;
  margin-left: -100px;
}
.btn {
  position: relative;
  float: right;
  clear: both;
  margin-left: 20px;
  font-size: 12px;
  padding: 0 8px;
  background: #307cfb;
  line-height: 22px;
  border-radius: 2px;
  color: #fff;
  cursor: pointer;
}
.btn::after {
  content: '查看更多';
}
.exp {
  display: none;
  background: #eee;
}
.exp:checked + .text {
  max-height: none;
}
.exp:checked + .text::after {
  visibility: hidden;
}
.exp:checked + .text .btn::before {
  visibility: hidden;
}
.exp:checked + .text .btn::after {
  content: '收起';
}
.btn::before {
  content: '...';
  position: absolute;
  bottom: -3px;
  left: -8px;
  color: #2c2c2c;
  transform: translateX(-100%);
}