html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: black;
    color: white;
    display: flex; 
    flex-flow: column;
    justify-content: center;
    align-items: center;
    font-family: monospace;
    font-size: 1em;
    overflow: hidden;
}

.nazo {
    padding-top: 50px;
    padding-bottom: 50px;
}

#cursor {
    animation: blink 1s step-end infinite;
}

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