html,
body {
    height: 100%;
    margin: 0;
}

body {
    font-family: "Courier New", Courier, monospace;
    background-color: black;
    color: #777;
    font-size: 1.25rem;
}

body a {
    color: white;
    text-decoration: none;
}

.container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.prompt::after {
    content: "█";
    animation: blink 2s steps(1) infinite;
}

@keyframes blink {
    0%,
    50%,
    100% {
        opacity: 1;
    }
    25%,
    75% {
        opacity: 0;
    }
}