/* Used files: [[File:Snow.png]] [[File:Snow2.png]] [[File:Snow3.png]] [[File:Snow transparent.png]] [[File:Snow transparent2.png]] [[File:Snow transparent3.png]] */
body > .main-container {
    background: url('https://images.wikia.nocookie.net/dev/images/4/4e/Snow.png'), 
                url('https://images.wikia.nocookie.net/dev/images/e/ee/Snow2.png'), 
                url('https://images.wikia.nocookie.net/dev/images/d/d8/Snow3.png')
                fixed;
    -webkit-animation: snow 20s linear infinite;
    -moz-animation: snow 20s linear infinite;
    -ms-animation: snow 20s linear infinite;
    animation: snow 20s linear infinite;
}

@keyframes snow {
    100% {
        background-position: 500px 1000px, 400px 400px, 300px 300px, 0px 0px;
    }
}

@-moz-keyframes snow {
    100% {
        background-position: 500px 1000px, 400px 400px, 300px 300px, 0px 0px;
    }
}

@-webkit-keyframes snow {
    100% {
        background-position: 500px 1000px, 400px 400px, 300px 300px, 0px 0px;
    }
}