#home {
    margin: 0 auto;
    width: 75%;/*原始65*/
    min-width: 980px;/*页面顶部的宽度*/
    background-color: rgba(245, 245, 245, 0.7);
    padding: 30px;
    margin-top: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
#blogTitle h2 {
    color: sandybrown;
}

#header {
    z-index: 0;
}