body {
    font-family: 'Sarabun', sans-serif;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.banner {
    background-color: #e0e4e7;
    color: white;
    padding: 20px;
    text-align: center;
}

.banner h1 {
    margin-bottom: 10px;
}

.container {
    display: flex;
    min-height: 100%;
}

.sidebar {
    background-color: #f0f0f0;
    padding: 20px;
    overflow-y: auto;
    width: fit-content;
    flex-shrink: 0;
}


.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li a {
    display: block;
    padding: 5px 0;
    text-decoration: none;
    color: #333;
}

.sidebar li ul {
    margin-left: 20px;
}

.content {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
}

section {
    margin-bottom: 20px;
}

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