body {margin: 0;}
.logo {
	width: 300px;
	margin: 25px;
	float: center;
}
p {
	font-size: 25px;
	margin-left: 100px;
	margin-right: 100px;
}
h6 {
	font-size: 30px;
	margin-left: 30px;
	margin-right: 30px;
}
.list-item {
	font-size:20px;
	margin-left: 100px;
	margin-right: 100px;
}
.side-title {
	font-size:30px;
	margin-left:70px;
	margin-right:70px;
}
.bi {
	font-size:20px;
}
.topnav-container {
	float: right;
}
ul.topnav {
	list-style-type: none;
	margin: 0px;
	padding: 30px;
	overflow: hidden;
}
ul.topnav li {
	float: left;
	position: relative;
}
ul.topnav li a {
	display: block;
	text-align: center;
	text-decoration: none;
	background-color: #f7f7f7;
	color: black;
	font-size: 30px;
	font-family: Uroob, "Times New Roman", Times, serif;
	font-style: normal;
	border-radius: 7px;
	padding: 15px 10px 10px 10px;
	margin: 10px;
}
ul.topnav li a:hover, ul.topnav li a:active {
	background-color: #f0f0f0;
}
pre {
	font-size: 22px;
	background-color: #f5ffff;
	padding: 15px 20px;
	margin-left: 100px;
	margin-right: 100px;
	overflow: auto;
}
.youtube-video {
	aspect-ratio: 16 / 9;
	width: 50%;
	margin: 0 auto;
	display: block;
}

@media screen and (max-width: 1075px) {
	p {
		font-size: 22px;
		margin-left: 40px;
		margin-right: 40px;
	}
	.list-item {
		font-size: 15px;
		margin-left: 50px;
		margin-right: 50px;
	}
	.topnav-container {
		margin: auto;
		float: none;
	}
	pre {
		font-size: 19px;
		margin-left: 40px;
		margin-right: 40px;
	}
	.youtube-video {
		width: 70%;
	}
}

@media screen and (max-width: 650px) {
	p {
		font-size: 18px;
		margin-left: 25px;
		margin-right: 25px;
	}
	.list-item {
		font-size: 10px;
		margin-left: 25px;
		margin-right: 25px;
	}
	ul.topnav li.right, 
	ul.topnav li {
		float: none;
		top: 0px;
		position: static;
	}
	ul.topnav li a:link, ul.topnav li a:visited, ul.topnav li a:hover, ul.topnav li a:active {
		font-size: 25px;
		padding: 10px;
	}
	.logo {
		margin: auto;
		width: 80%;
		display: block;
	}
	pre {
		font-size: 15px;
		margin-left: 25px;
		margin-right: 25px;
	}
	.youtube-video {
		width: 85%;
	}
}