Android webview点击或长按有蒙层

body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, button, textarea, p, blockquote, th, td, a, i, del, span{
    margin: 0;
    padding: 0;
    font-family:"微软雅黑";
    cursor: pointer;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;/* 取消高亮 */
   -webkit-focus-ring-color: rgba(0, 0, 0, 0);
}
:focus, :hover, :active{
    -webkit-tap-highlight-color:rgba(0,0,0,0);
}