/* W3Schools CSS Web Layout */
* {
    box-sizing: border-box;
}

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

/* Header */
header {
    background-color: #2196F3;
    padding: 15px;
    text-align: center;
    font-size: 28px;
    color: white;
}

/* Content */
main {
    background-color: #f1f1f1;
    padding: 20px;
    min-height: 400px;
}

/* Flex container for content */
.flex-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.flex-container > div {
    background-color: #f9f9f9;
    padding: 20px;
    flex: 1;
    min-width: 300px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

nav ul{
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: #333;
    display: flex;
}

footer {
    position: relative;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: #777;
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 20px;
}

nav ul li{
    position: relative;
}

nav ul li a{
    display: block;
    color: white;
    text-align: center;
    padding: 16px 25px;
    text-decoration: none;
    font-size: 16px;
}

nav ul li a:hover{
    background-color: #111;
}

/* DROPDOWN */

.dropdown-menu{
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #333;
    min-width: 220px;
    list-style: none;
    padding: 0;
    margin: 0;
    z-index: 1000;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}

.dropdown:hover .dropdown-menu{
    display: block;
}

.dropdown-menu li{
    width: 100%;
    border: none;
}

.dropdown-menu li a{
    padding: 14px 18px;
    color: white;
    font-size: 15px;
}

.dropdown-menu li a:hover{
    background-color: #111;
}