/* Reset some default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* Container for sidebar and content */
.container {
    display: flex;
    height: 100vh;
}

/* Sidebar styles */
.sidebar {
    background-color: #333;
    color: white;
    min-width: 200px;
    max-width: 250px;
    padding: 20px;
}

.sidebar ul {
    list-style-type: none;
}

.sidebar li {
    margin: 15px 0;
}

.sidebar a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 10px 0;
}

.sidebar a:hover {
    background-color: #575757;
}

/* Submenu styles */
.submenu {
    position: relative;
}

.submenu-items {
    display: none;
    list-style-type: none;
    padding-left: 20px;
    background-color: #444;
    margin: 0;
    padding: 0;
}

.submenu-items li {
    margin: 10px 0;
}

.submenu:hover .submenu-items {
    display: block;
}

.submenu-items a {
    padding: 10px;
    background-color: #444;
}

.submenu-items a:hover {
    background-color: #575757;
}

/* Main content styles */
.content {
    flex: 1;
    padding: 20px;
}

/* Responsive design for tablets and mobiles */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        max-width: none;
        width: 100%;
        text-align: center;
    }

    .sidebar ul {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .sidebar li {
        margin: 0;
    }

    .submenu-items {
        padding-left: 0;
    }

    .submenu-items.active {
        display: block;
    }

    .content {
        flex: none;
    }
}