body {
    background-color: #000080;
    background-image: url('https://www.transparenttextures.com/patterns/cubes.png');
    color: #00ff00;
    font-family: "Comic Sans MS", "Comic Sans", cursive;
    margin: 0;
    padding: 20px;
}

#container {
    max-width: 800px;
    margin: 0 auto;
    border: 5px ridge #ff00ff;
    padding: 20px;
    background-color: #000000;
}

header h1 {
    color: #ffff00;
    text-shadow: 2px 2px #ff0000;
    border-bottom: 3px dashed #00ffff;
    padding-bottom: 10px;
}

nav {
    margin: 20px 0;
    text-align: center;
    border: 2px solid #ffffff;
    padding: 10px;
}

nav a {
    color: #ff0000;
    text-decoration: none;
    font-weight: bold;
    margin: 0 10px;
}

nav a:hover {
    background-color: #ffffff;
    color: #000000;
}

main {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

#welcome, #content {
    flex: 2;
    min-width: 300px;
}

aside {
    flex: 1;
    min-width: 200px;
}

.box {
    border: 2px inset #ffffff;
    padding: 10px;
    margin-bottom: 20px;
}

h2, h3, h4 {
    color: #00ffff;
}

.blink {
    animation: blinker 1s linear infinite;
    color: #ff00ff;
    font-weight: bold;
    font-size: 1.2em;
    text-align: center;
    margin: 10px 0;
}

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

#counter {
    background-color: #333;
    color: #f00;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.5em;
    padding: 5px;
    display: inline-block;
    border: 1px solid #777;
}

footer {
    margin-top: 20px;
    border-top: 3px double #00ffff;
    text-align: center;
    font-size: 0.8em;
}