html,body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}
h1 {
    display: flex;
    justify-content: center;
    width: 100%;
    height: 100%;
    align-items: center;
    margin: 0;
    padding: 0;
}
.logo-img {
    width: 40vw;
}