body {
    margin: 0;
    padding: 0;
}

.top {
    width: 100vw;
    height: 20%;
    background-color: white;
    position: absolute;
    justify-content: center;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.main {
    background-image: url(background.jpg);
}