body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #ffffff;
}
/*定义滚动条高宽及背景
 高宽分别对应横竖滚动条的尺寸*/
::-webkit-scrollbar
{
    width:3px;
    height:3px;
    background-color:#F5F5F5;
}
/*定义滚动条轨道
 内阴影+圆角*/
::-webkit-scrollbar-track
{
    -webkit-box-shadow:inset 0 0 6px rgba(0,0,0,0.3);
    border-radius:10px;
    background-color:#F5F5F5;
}
/*定义滑块
 内阴影+圆角*/
::-webkit-scrollbar-thumb
{
    border-radius:10px;
    -webkit-box-shadow:inset 0 0 6px rgba(0,0,0,.3);
    background-color:#555;
}
.logo img {
    height: 40px;
}
.menu{
     display: flex;
    justify-content: right;
}
header {
    background-color: #1f1f1f;
    padding: 10px 20px;
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    text-decoration: none;
    color: #ffffff;
    font-size: 18px;
}

nav ul li a:hover {
    color: #bbbbbb;
}

main {
    padding: 20px;
}

.wallpapers {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    gap: 10px; /* 间隙可以根据需要调整 */
}

.wallpaper {
    flex: 0 1 calc(20% - 10px); /* 每行5个，减去间隙 */
    box-sizing: border-box;
    margin: 10px 0;
    height: 200px; /* 固定高度 */
    overflow: hidden; /* 隐藏溢出部分 */
    border-radius: 10px; /* 可选：添加圆角效果 */
}

.wallpaper img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 确保图片填满容器并保持宽高比 */
    border-radius: 10px; /* 与容器保持一致的圆角效果 */
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: #1f1f1f;
    position: absolute;
    bottom: 0;
    width: 100%;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .wallpaper {
        flex: 0 1 calc(25% - 10px); /* 每行4个 */
    }
}

@media (max-width: 900px) {
    .wallpaper {
        flex: 0 1 calc(33.33% - 10px); /* 每行3个 */
    }
}

@media (max-width: 600px) {
    .wallpaper {
        flex: 0 1 calc(50% - 10px); /* 每行2个 */
    }
}

@media (max-width: 400px) {
    .wallpaper {
        flex: 0 1 calc(100% - 10px); /* 每行1个 */
    }
}
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}
.modal.show {
    display: block;
    backdrop-filter: blur(5px);
}
.modal-content {
    background-color: #1f1f1f;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 300px;
    text-align: center;
    border-radius: 10px;
    color: #ffffff;
}

.modal-content button {
    margin: 5px;
    padding: 10px 20px;
    background-color: #333;
    color: #ffffff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.modal-content button:hover {
    background-color: #555;
}