input 选中状态去除背景色

.el-input__inner:-webkit-autofill,
  .el-input__inner:-webkit-autofill:hover,
  .el-input__inner:-webkit-autofill:focus,
  .el-input__inner:-webkit-autofill:active {
    -webkit-transition-delay: 99999s;
    -webkit-transition: color 99999s ease-out, background-color 99999s ease-out;
  }