body{
background-image:url("https://s1.ax1x.com/2020/04/13/Gj7qpV.png");
background-repeat:no-repeat;
background-size: cover;
background-attachment: fixed;
filter:alpha(opacity=70); -moz-opacity:0.8; -khtml-opacity: 0.8; opacity: 0.8;
}
/*去广告*/
div[id^="ad_"] {display: none;}
div[class^="c_ad"] {display: none;}
div[id^="under_post"] {display: none;}