body{
	background:url("th.jpg") no-repeat ;
	background-size: 100%;
}
header {
    background-color: #333;
    color: #fff;
    padding: 20px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

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

nav ul li a {
    color: #fff;
    text-decoration: none;
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

section {
    margin-bottom: 30px;
}

#gallery img {
    display: block;
    margin-bottom: 20px;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 10px;
    text-align: center;
}