@import url('https://fonts.googleapis.com/css2?family=Fira+Sans:wght@300;400;600&display=swap');

*{
	box-sizing: border-box;
}

body{
	margin: 0;
	padding: 0;
	font-family: 'Fira Sans', sans-serif;
	display: flex;
	line-height: 1.7;

}

main header, 
nav header{
	font-weight: 700;
	font-size: 1.5em;
}

nav{
	border-right: 2px solid black;
	width: 800px;
}

nav header{
	padding: 15px;
}

nav a{
	padding: 15px;
	display: block;
	border-top: 1px solid black;
	text-decoration: none;
	color: #333;
}

main{
	padding: 20px;
	height: 100vh;
	overflow-y: scroll;
	padding-bottom: 500px;
}

main code pre{
	background-color: #eee;
	padding: 20px 20px 0 20px;
	border-radius: 10px;
}

/*media query*/
@media (max-width: 576px){
	body{
		flex-direction: column;
		overflow-x: hidden;
	}

	nav{
		border-bottom: 1px solid black;
		overflow-y: scroll;
		height: 300px;
	}

	main{
		width:  100vw;
		overflow-y: unset;
	}
}