body, html {
    height: 100%;
    margin: 0;
    background-color: #0078f0; 
    display: flex;
    justify-content: center;
    align-items: center;
}

#screen {
    width: 100%;
    height: 100%;
    background-color: #0078f0; 
    color: white; 
    font-family: 'Commodore', monospace;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    white-space: pre;
    overflow: hidden;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.cursor {
    animation: blink 1s step-start infinite;
}