a链接点击出现蓝色边框解决办法

css中添加
 -webkit-tap-highlight-color: transparent; outline: none;




.pageStr span a {
  border: 1px solid #e4e4e4;
  color: #999;
  cursor: pointer;
  display: inline-block;
  height: 29px;
  line-height: 29px;
  padding: 0 10px;
  text-align: center;
  background:#fff;
   -webkit-tap-highlight-color: transparent; outline: none;
}