body 
{
    width: 100vw;
    height: 100vh;
    padding: 0px;
    margin: 0px;
    overflow: hidden;

    // @include no-select
    -webkit-touch-callout: none;
    -moz-user-select: none;
    /*火狐*/
    -webkit-user-select: none;
    /*webkit浏览器*/
    -ms-user-select: none;
    /*IE10*/
    -khtml-user-select: none;
    /*早期浏览器*/
    user-select: none;
}