aliapp-demo/page/component/component-pages/input/input.acss

.extra-info {
  border-top: 1px solid #ddd;
  margin-left: 30rpx;
  padding: 20rpx 0;
}

.search-outer {
  box-sizing: border-box;
  display:flex;
  height:40px;
  overflow:hidden;
  padding: 8px;
  border-bottom: 1px solid #ddd;
  background-color: #efeff4;
}

.search-outer * {
  box-sizing: border-box;
}

.search-input {
  flex:1;
  text-align: left;
  display: block;
  color: #000;
  height: 24px;
  font-size: 15px;
  background-color: #fff;
  border-color: transparent;
}

.search-input:focus + .search-cancel {
  margin-right:0;
  opacity: 1;
}

.search-cancel {
  margin-right:-40px;
  display: inline-block;
  opacity: 0;
  padding-left: 8px;
  height: 24px;
  line-height: 24px;
  font-size: 16px;
  color: #108ee9;
  text-align: right;
  transition: margin-right .3s,opacity .3s;
  transition-delay: .1s;
}