/* General Styles */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 20px;
}

h1 {
    margin: 0;
}

/* Main Menu Styles */
nav {
    background-color: #333;
}

#main-menu {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.menu-item {
    position: relative;
}

.menu-item > a {
    display: block;
    padding: 14px 20px;
    color: white;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}

.menu-item > a:hover {
    background-color: #4CAF50;
}

/* Submenu Styles */
.sub-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #f9f9f9;
    list-style-type: none;
    margin: 0;
    padding: 0;
    width: 200px;
    box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.2);
}

.sub-menu li {
    border-bottom: 1px solid #ddd;
}

.sub-menu li a {
    display: block;
    padding: 10px;
    color: #333;
    text-decoration: none;
    background-color: white;
}

.sub-menu li a:hover {
    background-color: #ddd;
}

/* Show submenu on hover */
.menu-item:hover .sub-menu {
    display: block;
}

/* Responsive Design */
@media only screen and (max-width: 600px) {
    #main-menu {
        flex-direction: column;
        align-items: center;
    }

    .menu-item > a {
        padding: 10px;
        flex-grow: 0;
    }

    .sub-menu {
        position: static;
        width: 100%;
    }
}