body {
    margin: 5rem 0;
    width: 100%;
    text-align: center;
    font-family: sans-serif;
}

h1 {
    font-size: 30pt;
}

section {
    margin: 2rem;
}

@keyframes blink {
    0% { font-size: 6pt; }
    50% { font-size: 21pt; }
    100% { font-size: 6pt; }
}

.c, .h, .r {
    animation: blink infinite 1s;
}

.h { animation-delay: .33s; }
.r { animation-delay: .66s; }