body:before {
    background: url(https://img2020.cnblogs.com/blog/2015716/202006/2015716-20200604161136938-770599493.jpg) center/cover no-repeat;
    content: '';
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.9;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    -webkit-filter: grayscale(40%);
    -moz-filter: grayscale(40%);
    -ms-filter: grayscale(40%);
    -o-filter: grayscale(40%);
    filter: grayscale(40%);
    filter: gray;
}




a:hover{
 cursor:url(https://files.cnblogs.com/files/laoguantongxiegogo/click_24px_1231393_easyicon.net.ico),auto;
}
body{
 cursor:url(https://files.cnblogs.com/files/laoguantongxiegogo/pointer_24px_1231389_easyicon.net.ico),auto;
}

/* 隐藏反对按钮 */ 
.buryit { display:none; }