/*背景图片样式*/
[data-md-color-scheme="slate"] .background {
    background-image: url(https://cdn.jsdelivr.net/gh/24849748/PicBed/ob/bg.jpg); /* 改成你所要的图片 */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    /* opacity: 0.08; */
    opacity: 0.1;
    pointer-events: none;
    /* filter: blur(2px); */
}

[data-md-color-scheme="default"] .background {
    background-image: url(https://cdn.jsdelivr.net/gh/24849748/PicBed/ob/bg.jpg); /* 改成你所要的图片 */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0.16;
    pointer-events: none;
    /* filter: blur(2px); */
}