.blink {
    animation: blinker 1.5s linear infinite;
    color: red;
    font-family: sans-serif;
    font-weight: bold;
    font-size: 3em;
}
@keyframes blinker {
    50% {
        opacity: 0;
    }
}

h1.size1 {
    font-family: sans-serif;
    font-weight: bold;
    letter-spacing: -2px;
}
h1.size2 {
    font-family: "Trebuchet MS", sans-serif;
    font-size: 5em;
    letter-spacing: -2px;
    border-bottom: 2px solid black;
    text-transform: uppercase;
}
h1.size3 {
    font-family: "Arial Black", sans-serif;
    font-size: 3em;
    letter-spacing: -1px;
    background-color: black;
    color: white;
}