body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #e0f7fa; /* Güzel bir arka plan rengi */
}

header {
    background-color: #00796b;
    color: white;
    padding: 1rem;
    text-align: center;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 2rem;
    text-align: center;
}

section {
    margin: 2rem 0;
    padding: 1rem;
    border-radius: 8px;
    background-color: #ffffff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h3 {
    color: #00796b;
}

footer {
    background-color: #00796b;
    color: white;
    text-align: center;
    padding: 1rem;
    position: fixed;
    bottom: 0;
    width: 100%;
}

/* Cihaz uyumluluğu için medya sorguları */
@media (max-width: 768px) {
    header, footer {
        padding: 0.5rem;
        text-align: center;
    }
    
    nav ul li {
        display: block;
        margin: 5px 0;
    }
    
    main {
        padding: 1rem;
    }
    
    section {
        margin: 1rem 0;
        padding: 0.5rem;
    }
}

@media (max-width: 480px) {
    header, footer {
        padding: 0.3rem;
        text-align: center;
    }
    
    nav ul li {
        display: block;
        margin: 3px 0;
    }
    
    main {
        padding: 0.5rem;
    }
    
    section {
        margin: 0.5rem 0;
        padding: 0.3rem;
    }
}