.buryit{
display:none;
}

#home{   
      filter:alpha(opacity=50);   
      -moz-opacity:0.8;   
      -khtml-opacity: 0.8;   
      opacity: 0.8;   
}
body{
background-image:url(https://images.cnblogs.com/cnblogs_com/wfj2048/951248/o_d1e2c11c9ccf08f3d4d9d3afeb6e49b0.jpg);
background-size:cover;
background-attachment:fixed;
}