body {
color: #000;
background: url(https://img2020.cnblogs.com/blog/1962912/202004/1962912-20200420191051765-259418022.jpg) fixed;
background-size: 100%;
background-repeat: no-repeat;
background-attachment: fixed;
background-position: centor 0;
background-size: cover;
padding-top: 0px;
opacity: 0.9
}

#topics .postTitle {
border: 0px;
font-size: 200%;
font-weight: bold;
float: left;
line-height: 1.5;
width: 100%;
padding-left: 5px;
}