h1{
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-200%);
}

h2{
    text-align: left;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-200%);
}

.center{
    display: block;
    margin-left: auto;
    margin-right: auto;
}