* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 10px;
}

header {
    text-align: center;
    padding: 15px 0;
    background-color: #fff;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 1.5rem;
    color: #00796b;
}

.banner-container {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 6px rgba(0,0,0,0.16);
    transition: transform 0.3s ease;
}

.banner-container:hover {
    transform: translateY(-3px);
}

.banner-link {
    display: block;
    width: 100%;
}

.banner-img {
    width: 100%;
    height: auto;
    display: block;
}

footer {
    text-align: center;
    padding: 15px 0;
    margin-top: 20px;
    font-size: 0.8rem;
    color: #666;
}

/* Media queries para garantir responsividade */
@media (max-width: 480px) {
    .container {
        padding: 8px;
    }
    
    header {
        padding: 10px 0;
        margin-bottom: 10px;
    }
    
    header h1 {
        font-size: 1.3rem;
    }
    
    .banner-container {
        margin-bottom: 10px;
    }
}

/* Efeito de toque para dispositivos móveis */
@media (hover: none) {
    .banner-container:active {
        opacity: 0.8;
    }
}