.common {
    position: absolute;
    height: 100%;
    width: 100%;
    overflow: hidden;
}

.blurPolyfill {
    composes : common;
    background: rgba(255,255,255,.25);
}

.blur {
    composes : common;
    backdrop-filter : blur(10px) contrast(0.4) brightness(1.4);
    -webkit-backdrop-filter : blur(10px) contrast(0.4) brightness(1.4);

    & + * {
        filter: blur(0px);
        -webkit-filter: blur(0px);
    }
}

.blurPolyfillLock {
    composes : common;
    background: rgba(150,150,150,0.5);
}

.blurLock {
    composes : common;
    backdrop-filter : blur(10px) contrast(0.4) brightness(1.1);
    -webkit-backdrop-filter : blur(10px) contrast(0.4) brightness(1.1);

    & + * {
        filter: blur(0px);
        -webkit-filter: blur(0px);
    }
}