* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

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

header {
	background-color: #333;
	color: #fff;
	padding: 20px;
	display: flex;
	justify-content: space-between;
	align-items: center;
}

nav ul {
	list-style: none;
	display: flex;
}

nav ul li {
	margin-right: 20px;
}

nav ul li a {
	color: #fff;
	text-decoration: none;
}

.banner {
	background-color: #f2f2f2;
	padding: 50px;
	display: flex;
	flex-direction: column;
	align-items: center;
}

.banner h2 {
	margin-bottom: 20px;
}

.banner p {
	margin-bottom: 20px;
}

.courses {
	padding: 50px;
}

.courses h2 {
	margin-bottom: 20px;
}

.course-list {
	display: flex;
	flex-wrap: wrap;
}

/* Global Styles */

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    }
    
    header {
    background-color: #333;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    }
    
    nav ul {
    display: flex;
    list-style: none;
    }
    
    nav ul li {
    margin-right: 20px;
    }
    
    nav ul li a {
    color: #fff;
    text-decoration: none;
    }
    
    #banner {
    background-color: #f2f2f2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 500px;
    }
    
    #banner h2 {
    font-size: 48px;
    margin-bottom: 20px;
    }
    
    #banner p {
    font-size: 24px;
    margin-bottom: 40px;
    }
    
    .button {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    }
    
    .button:hover {
    background-color: #fff;
    color: #333;
    transition: background-color 0.5s ease, color 0.5s ease;
    }
    
    section {
    padding: 50px;
    }
    
    section h2 {
    font-size: 36px;
    margin-bottom: 20px;
    }
    
    section ul {
    list-style: none;
    margin-left: 0;
    padding-left: 0;
    }
    
    section li {
    font-size: 24px;
    margin-bottom: 10px;
    }
    
    section#about {
    background-color: #f2f2f2;
    }
    
    section#courses {
    background-color: #fff;
    }
    
    section#contact {
    background-color: #f2f2f2;
    }
    
    footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
    }
    
    /* Media Queries */
    
    @media only screen and (max-width: 768px) {
    header {
    flex-direction: column;
    }
    
    nav ul {
    flex-direction: column;
    margin-top: 20px;
    }
    
    nav ul li {
    margin-right: 0;
    margin-bottom: 10px;
    }
    }