html,
body {
    height: 100%;
    width: 100%;
}

body {
    overflow: hidden;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.unsplash {
    width: 100%;
    height: 100%;
    background-image: url("https://source.unsplash.com/1920x1080/?funny");
    background-position: center;
}

.preloader-group {
    position: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
    width: inherit;
    height: inherit;
}

.oval {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background-color: crimson;
    animation: loading 0.5s infinite alternate ease-in-out;
}

.vanish {
    animation: vanish 1s forwards;
}

@keyframes vanish {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

@keyframes loading {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.5);
    }
}