body, html {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    height: 300%;
}

.hero {
    height: 100vh;
    background-image: url(../fenmiantu/IMG032.jpg); /* 在这里放置你的背景图片链接 */
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    color: rgb(0, 0, 0);
    text-align: center;
    
}



main.content {
    display: flex;
    padding: 20px;
}
.kong {
    flex: 0 0 20%;
    
}

.article {
    flex: 0 0 50%;
    padding: 20px;
}

.sidebar {
    flex: 0 0 20%;
    padding: 20px;
    

}

@media screen and (max-width: 768px) {
    main.content {
        flex-direction: column;
    }
    .article, .sidebar {
        flex: 0 0 100%;
        padding: 10px;
    }
    .sidebar {
        border-left: none;
        border-top: 2px solid #ccc;
    }
}