* {
    color: #ccc;
    font-family: Arial, sans-serif;
}

body {
    background: #212121;
    margin: 0;
    font-size: 16px;
    }

nav {
    background-color: #181818;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 0.2rem 0;
}

nav ul {
    list-style: none;
    padding-left: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

nav ul a {
    padding: 11px 21px;
    display: block;
}

nav ul a:hover {
    background-color: #303030;
}

.button-group {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.button-group button {
    background-color: #191818;
    color: #fff;
    padding: 10px 20px;
    border: 1px solid #dfdfd5;
    border-radius: 5px;
    cursor: pointer;
    margin: 1px;
}

.button-group button:hover {
    background-color: #212121;
    padding: 11px 21px;
    margin: 0;
}

.button-group button:active {
    background-color: #212121;
    padding: 9px 19px;
    margin: 2px;
}

@media (max-width: 768px) {
    nav ul a {
        padding: 10px 14px;
        font-size: 0.9rem;
    }
}