body {
    background-image: url('../images/vintage_rainbow.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: black;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 20px;
}

.main-image {
    max-width: 100%;
    height: auto;
    margin-bottom: 10px;
}

header h1 {
    font-size: 5em;
    margin: 0;
}

header p {
    font-size: 1.5em;
    margin: 5px 0;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 1200px;
}

.columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    width: 100%;
    padding: 40px 20px;
    box-sizing: border-box;
}

.column {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.icon {
    color: black;
    margin-bottom: 15px;
    font-size: 5.25em; /* 75% larger than 3em (fa-3x base) */
}

.column h2 {
    font-size: 3.15em; /* 75% larger than 1.8em */
    margin: 0;
}

.column h2 a {
    color: black;
    text-decoration: none;
    transition: color 0.3s ease;
}

.column h2 a:hover {
    color: #333;
}

footer {
    text-align: center;
    padding: 10px;
    width: 100%;
    background-color: rgba(0, 0, 0, 0);
    color: black;
}

/* Responsive Design */
@media (max-width: 768px) {
    .columns {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
        padding: 30px 10px;
    }
    
    header h1 {
        font-size: 4em;
    }
    
    header p {
        font-size: 1.2em;
    }
    
    .icon {
        font-size: 4.2em;
    }
    
    .column h2 {
        font-size: 2.52em;
    }
}

@media (max-width: 480px) {
    .columns {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 20px 10px;
    }
    
    header h1 {
        font-size: 3em;
    }
    
    header p {
        font-size: 1em;
    }
    
    .icon {
        font-size: 3.15em;
    }
    
    .column h2 {
        font-size: 1.89em;
    }
}