body {
    font-size: 16px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: white;
    text-align: center;
    min-height: 100vh;
    margin: 20px;
    padding: 5px;

    background-image: url("checkers.png");
    background-size: 10vmax;
    background-repeat: repeat;
    image-rendering: pixelated;
    animation: linear 18s infinite background;
    /*background-attachment: fixed;*/
}

#main-container {
    width: 90vw;
    max-width: 600px;
    margin: auto;
}

#logo {
    width: 300px;
    max-width: 80vw;
    transform: rotate3d(0, 1, 0.5, 0deg);
    animation: linear 6s infinite rotation;
}

h1:hover, h2:hover {
    transform: scale(1.1, 1.1);
    transition: linear 0.1s transform;
}

.box {
    background-color: #00000072;
    border: white 3px solid;
    border-radius: 20px;
    padding: 10px;
    box-shadow: black 0px 0px 15px;
}

.shadow {
	text-shadow: black 0px 0px 15px;
}

.margin {
    margin: 20px
}

@keyframes background {
    from {
        background-position: 0vmax 0vmax;
    }

    to {
        background-position: 50vmax 50vmax;
    }
}

@keyframes rotation {
    from {
        transform: rotate3d(0, 1, 0.2, 0deg);
    }

    to {
        transform: rotate3d(0, 1, 0.2, 360deg);
    }
}