* {
    padding: 0;
    margin: 0;
}

html {
    font-size: 25px;
    min-height: 100vh;

    /* 禁止页面选择 */
    user-select:none;
    -webkit-user-select:none; 
}

#app {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 
        Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.bg {
    width: 100%;
    height: 100%;
    position: fixed;
    left: 0;
    top: 0;
    background: url("../img/jia.jpg");
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    /* filter: blur(5px); */
    z-index: -1;
}


@media (prefers-color-scheme: dark) {
    .bg {
        background: url("../img/dark-bg.jpg");
        background-repeat: no-repeat;
        background-position: center;
        background-size: cover;
        filter: blur(3px);
    }
}

@media (prefers-color-scheme: light) {
    .bg {
        background: url("../img/light-bg.jpg");
        background-repeat: no-repeat;
        background-position: center;
        background-size: cover;
        filter: blur(4px) brightness(85%);
    }
}

@media (min-width: 500px) {
    html {
        min-height: 200vh;
    }
}