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

body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: none;
    position: relative;
    overflow: hidden;
}

.background-collage {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-wrap: wrap;
    z-index: -1;
}

.background-collage .image {
    flex: 1 0 25%; /* Flex-grow: 1, Flex-shrink: 0, Flex-basis: 20% */
    height: 50%;
    background-size: cover;
    background-position: center;
}

.container {
    width: 90%;
    max-width: 400px;
    text-align: center;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.8); /* Semi-transparent background */
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

.profile-photo {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.profile-photo img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
}

header h1 {
    margin-bottom: 20px;
    font-size: 24px;
    color: #333;
}

main a {
    display: block;
    margin: 10px 0;
    padding: 15px;
    font-size: 18px;
    color: #fff;
    background-color: #007bff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

main a:hover {
    background-color: #0056b3;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        width: 95%;
    }

    .background-collage .image {
        flex: 1 0 50%; /* Flex-grow: 1, Flex-shrink: 0, Flex-basis: 50% */
        height: 25%;
    }
}