.typewriter h1 {
    overflow: hidden;
    border-right: .15em solid orange;
    white-space: nowrap;
    margin: 0 auto;
    letter-spacing: .11em;
    animation:
        typing 3.5s steps(40, end),
        blink-caret .75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0
    }

    to {
        width: 100%
    }
}

@keyframes blink-caret {

    from,
    to {
        border-color: transparent
    }

    50% {
        border-color: black;
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}