body, h1, h2, h3, p, ul, li {
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

header {
    background-color: #00eeff;
    color: #000000;
    padding: 20px;
}

header nav ul {
    list-style-type: none;
}

header nav ul li {
    display: inline;
    margin-right: 20px;
}

main {
    padding: 20px;
}

footer {
    padding: 20px;
}

section {
    margin-bottom: 40px;
}

h2 {
    font-size: 24px;
    margin-bottom: 10px;
}

h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 20px;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.gallery p {
    width: 100%;
    font-weight: bold;
}

.gallery-item {
    width: 45%;
    margin-bottom: 20px;
}

.gallery-item img {
    max-width: 100%;
    height: auto;
}

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

footer ul li {
    display: inline;
    margin-right: 10px;
}

footer ul li a {
    text-decoration: none;
    color: #333;
}

footer ul li a:hover {
    color: #666;
}