body {
    background-color: #0f0f0f;
    color: #f1f1f1;
    font-family: Helvetica, sans-serif;
    overflow: hidden;
}

.container {
    position: absolute;
    top:50%;
    transform: translateY(-50%);
    text-align: center;
    width: 100%;
    animation: 7s infinite alternate textshadow;
}
@media screen and (min-width: 700px) {
    h1 {
        font-size: 68pt;
    }
    h2 {
        font-size: 20pt;
    }
}

@keyframes textshadow {
0% {
    text-shadow: #ff7300 0 0 3rem;
}
25% {
    text-shadow: #f2ff00 0 0 3rem;
}
 50% {
    text-shadow: #11ff00 0 0 3rem;
 }
 75% {
    text-shadow: #3d71ff 0 0 3rem;
 }
 100% {
    text-shadow: #ff33d0 0 0 3rem;
 }
}