body {
    margin: 0;
    font-family: Arial, sans-serif;
}
nav {
    display: flex;
    justify-content: space-around;
    background-color: #556b78;
    padding: 10px 0;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 5px 15px;
}

nav a:hover {
    background-color: #6d8a94;
    border-radius: 5px;
}
.index {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 20px;
}

.index div {
    background-color: #d3e0e9;
    padding: 20px;
    text-align: center;
}
.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: 10px;
    padding: 20px;
}

.gallery .item1 {
    grid-column: span 2;
    grid-row: span 2;
    background-color: #cfd8dc;
    text-align: center;
    padding: 20px;
}

.gallery .item {
    background-color: #d3e0e9;
    text-align: center;
    padding: 20px;
}
footer {
    background-color: #556b78;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: relative;
    bottom: 0;
    width: 100%;
}