body {
    font-family: "Zen Kaku Gothic New", sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
}

.container {
    width: 960px;
    margin: 0 auto;
    display: flex;
}

aside {
    width: 200px;
    padding: 20px;
    background-color: #e8ecef;
}

main {
    width: 760px;
    padding: 20px;
    background-color: #fff;
}

main img {
    max-width: 100%;
    max-width: 720px;
    height: auto;
    width: auto;
}

header {
    background-image: url('/img/header-bg.jpg');
    background-size: cover;
    background-position: center bottom;
    padding: 20px;
    text-align: center;
    color: #fff;
}

header img {
    width: 100px;
}

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

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

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

footer {
    text-align: center;
    padding: 15px;
    background-color: #5b8cbd;
    color: #fff;
}

footer a {
    color: #fff;
    margin: 0 10px;
}

form {
    width: 100%;
}

form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

form input, form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

form textarea {
    height: 150px;
    resize: vertical;
}

form input[type="submit"] {
    background-color: #3498db;
    color: #fff;
    cursor: pointer;
    border: none;
    padding: 12px 20px;
}

form input[type="submit"]:hover {
    background-color: #2980b9;
}