body {
    margin: 0;
    font-family: Arial, sans-serif;
}

.header {
    background-color: #333;
    color: white;
    padding: 15px 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5em;
}

.menu ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
}

.menu li {
    margin-right: 20px;
}

.menu a {
    text-decoration: none;
    color: white;
}

.main-menu {
    background-color: #f1f1f1;
    padding: 10px;
}

.main-menu ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
}

.main-menu li {
    margin-right: 20px;
}

.main-menu a {
    text-decoration: none;
    color: #333;
}

.line {
    border-bottom: 1px solid #ccc;
}

.body-content {
    padding: 20px;
}

.main-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px;
    position: relative;
    bottom: 0;
    width: 100%;
}