* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: #121212;
    color: #fff;
    text-align: center;
    padding: 20px;
}

header {
    margin-bottom: 20px;
}

h1 {
    font-size: 2rem;
}

.iso-list {
    list-style: none;
    padding: 0;
}

.iso-list li {
    margin: 10px 0;
}

.iso-button {
    display: inline-block;
    padding: 10px 20px;
    background: #1e90ff;
    color: white;
    text-decoration: none;
    border-radius: 20px;
    transition: background 0.3s, transform 0.2s;
}

.iso-button:hover {
    background: #00bfff;
    transform: scale(1.1);
}

footer {
    margin-top: 20px;
    font-size: 0.8rem;
    opacity: 0.7;
}