Made a little redesign of coding.garden/videos :D

coding-garden-videos.css

h1.title {
	margin-top: 1rem;
	color: #7a8a7d;
	margin-bottom: 3rem;
}

div.filter-links {
	align-items: flex-start;
	justify-content: flex-start;
	margin-right: 5rem;
	border-left: 3px solid lime;
	padding-left: 1rem;
}

div.filter-links a.link {
	transition: outline .3s, color .3s;
	padding: .45rem 1rem;
}

div.filter-links a.link {
	border: 1px solid #4a4a4a;
	outline: none;
	color: #aeaeae;
	border-radius: .3rem;
	transition: border .3s, color .3s;
}

div.filter-links a.link:hover {
	text-decoration: none;
	color: white;
	border-color: #959595;
}

div.video.video-show {
	padding: 1rem;
	width: min-content;
}

div.video.video-show a {
	text-decoration: none;
	color: white;
}

div.video.video-show .card {
	height: auto;
	border-radius: .5rem;
	overflow: hidden;
	border: 1px solid #4a4a4a;
	background-color: #222;
	transition: background, border .3s;
}

div.video.video-show .card:hover {
	border-color: #959595;
}

div.video.video-show .card h5 {
	font-size: 1.3rem;
}

div.video.video-show .card .card-img-top {
	opacity: 1;
	transition: opacity .3s;
}

div.video.video-show .card:hover .card-img-top {
	opacity: 0.8;
}

input#filter {
	width: calc(100% - 2rem);
	margin: 1rem 1rem;
	margin-top: 0;
	box-sizing: border-box;
	outline: none;
	background-color: #222;
	border: 1px solid #4a4a4a;
	border-radius: .5rem;
	transition: border .3s;
	padding: .2rem .5rem;
	font-size: 1.2rem;
	color: white;
}

input#filter:focus {
	border-color: #959595;
}

label[for="filter"] {
	color: white;
	margin: 1rem;
	margin-bottom: 0;
	margin-top: 3rem;
	padding-bottom: .2rem;
	font-size: 1.2rem;
}

section#videos {
	margin: 0;
	
}

@media (min-width: 1400px) {
	section#videos {
		margin: 0 15rem;
	}
	
	label[for="filter"] {
		margin-left: 16rem;
		margin-right: 16rem;
	}
	
	input#filter {
		margin-left: 16rem;
		margin-right: 16rem;
		width: calc(100% - 32rem);
	}
	
	div.filter-links {
		padding-left: 15rem;
		margin-right: 15rem;
	}
}