body {
    background: rgba(12, 100, 129, 1) url(https://img2018.cnblogs.com/blog/1610117/201903/1610117-20190325145318172-1461917011.jpg) 
 fixed no-repeat;
    background-position: 50% 5%;
    background-size: cover;
}
#home {
    margin: 0 auto;
    width: 89%;
    min-width: 980px;
    background-color: rgba(245, 245, 245, 0.7);
    padding: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
#main {
    min-width: 950px;
    text-align: left;
    padding: 20px 0 0 10px;
    overflow: hidden;
}
#sideToolbar {
    position: fixed;
    bottom: 10px;
    right: 15px;
    width: 300px;
    height: 380px;
}