body {
    background-color: #000000;
    background-image: linear-gradient(#111 1px, transparent 1px), linear-gradient(90deg, #111 1px, transparent 1px);
    background-size: 20px 20px;
    color: #00FF00;
    font-family: "Courier New", Courier, monospace;
    text-align: center;
    margin: 0;
    padding: 20px;
}

.container {
    width: 800px;
    margin: 0 auto;
    border: 4px outset #888888;
    background-color: #000033;
    padding: 10px;
}

header {
    border-bottom: 2px solid #00FF00;
    margin-bottom: 10px;
    padding-bottom: 10px;
}

h1 {
    font-size: 36px;
    text-shadow: 2px 2px #FF00FF;
    margin-top: 5px;
}

marquee {
    background-color: #000000;
    color: #FFFF00;
    font-weight: bold;
    border: 1px inset #FFFFFF;
    padding: 2px;
}

nav {
    background-color: #333333;
    border: 2px ridge #999999;
    padding: 5px;
    margin-bottom: 15px;
}

nav a {
    color: #00FFFF;
    text-decoration: none;
    font-weight: bold;
    padding: 0 5px;
}

nav a:hover {
    background-color: #0000FF;
    color: #FFFFFF;
    text-decoration: underline;
}

main {
    display: flex;
    gap: 10px;
    text-align: left;
}

.content-box {
    flex: 3;
    border: 2px inset #555555;
    padding: 10px;
    background-color: #000022;
}

.sidebar {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.box {
    border: 2px outset #555555;
    padding: 5px;
    background-color: #002200;
    font-size: 12px;
}

.box h3 {
    background-color: #00FF00;
    color: #000000;
    margin: 0 0 5px 0;
    text-align: center;
}

button {
    background-color: #CCCCCC;
    border: 3px outset #FFFFFF;
    font-family: "Times New Roman", Times, serif;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    padding: 5px 20px;
}

button:active {
    border: 3px inset #FFFFFF;
}

.blink {
    animation: blinker 1s linear infinite;
}

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

.red-text {
    color: #FF0000;
    font-weight: bold;
    text-align: center;
}

.construction-bar {
    text-align: center;
    font-size: 20px;
}

footer {
    margin-top: 15px;
    border-top: 2px solid #00FF00;
    font-size: 10px;
    color: #BBBBBB;
    padding-top: 5px;
}