使用css设置border从中间向两边的颜色渐进效果

.rightCont>div:nth-child(1){
  width: 370px;
  height: 100%;
  border-right: 2px solid;
  border-image: -webkit-linear-gradient(-180deg, rgba(255,255,255,0.00) 0%,#00BBF2 20%, rgba(255,255,255,0.00) 99%) 2 2 2 2;
  border-image: -moz-linear-gradient(-180deg, rgba(255,255,255,0.00) 0%,#00BBF2 20%, rgba(255,255,255,0.00) 99%) 2 2 2 2;
  border-image: linear-gradient(-180deg, rgba(255,255,255,0.00) 0%,#00BBF2 20%, rgba(255,255,255,0.00) 99%) 2 2 2 2;
}.rightCont>d