body {
color: #000;
background: url(https://images.cnblogs.com/cnblogs_com/guomie/1464522/o_timg%20(2).jpg) fixed;
background-size: 100%;
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 14px;
min-height: 101%;
}
#home {
opacity: 0.80;
margin: 0 auto;
width: 85%;
min-width: 950px;
background-color: #fff;
padding: 30px;
margin-top: 30px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
.autograph {
    padding: 15px;
    background-color: #FFF7DC;
    border: 2px solid #FFBFBF;
    font-family:"Courier New", 微软雅黑, Consolas, Arial, 宋体;
}
.img_zfb {
    width:50%;
    height:50%;
}