body {
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    margin: 0;
    padding: 0;
}
.tabs {
    display: flex;
    background-color: #1e1e1e;
    padding: 10px;
    border-bottom: 2px solid #333;
}
.tab {
    padding: 10px 20px;
    cursor: pointer;
    color: #e0e0e0;
    transition: background 0.3s;
}
.tab:hover, .tab.active {
    background-color: #333;
}
.content {
    padding: 20px;
    display: none;
}
.content.active {
    display: block;
}