iframe {
    width: 1000px;
    height: 700px;
}

footer {
    margin: 1%;
    text-align: center;
    color: black;
}

footer div a {
    color: black;
    text-decoration: none;
}
.upyun-logo {
    background-color: black; /* 设置背景颜色为黑色 */
    padding: 5px; /* 添加内边距让背景显示清晰 */
}