body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

.background {
    background-image: url('https://th.bing.com/th/id/R.12596cf5abe23b18c13334e87d5967bf?rik=VX9VmzHsEox1AQ&riu=http%3a%2f%2fmedia3.giphy.com%2fmedia%2f1ykBr9s2NevYs%2fgiphy.gif&ehk=1rGmI1OCuI9qcwDQFXiznpZJ3jT%2bZoN%2f4x%2fKRQ3GCxg%3d&risl=&pid=ImgRaw&r=0'); /* Replace 'background.gif' with your GIF file path */
    background-size: cover;
    background-position: center;
    position: relative;
    height: 100%;
}

.logo {
    width: 300px;
    position: absolute;
    top: 50%;
    left: 48%;
    transform: translate(-50%, -50%);
}