body {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #000;
    color: #00ff00;
    transition: opacity 1s ease-in-out;
}
.terminal {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    font-family: 'Courier New', monospace;
    font-size: 16px;
    line-height: 1.6;
    background-color: #000;
    border: 2px solid #00ff00;
    padding: 20px;
    box-sizing: border-box;
}

.terminal::before {
    content: '$';
    color: #00ff00;
    display: inline-block;
    margin-right: 10px;
}

.terminal::after {
    content: '|';
    animation: blink 1s infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}