/*字体*/
body {
    font-family: comic sans ms;
    background-color: white;
}

/*边框*/
blockquote {
    background: none;
    border: 2px solid #efefef;
    padding-left: 10px;
    padding-right: 10px;
    padding-top: 5px;
    padding-bottom: 5px;
    margin-top: 10px;
    margin-bottom: 10px;
}

/*宽度*/
#home {
    width: 72%;
}

/*回到顶部*/
.bottom_tools {
    position: fixed;
    z-index: 1070;
    right: 50px;
    bottom: 60px;
    display: block;
    width: 55px;
    height: 55px;
}
.bottom_tools a {
    display: none;
    width: 55px;
    height: 55px;
    background: url('https://images.cnblogs.com/cnblogs_com/suoning/845162/o_back-top.png') no-repeat left top;
}