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About the <head>

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CSS

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HTML 

              
                <header class="header">
	<div class="header-content responsive-wrapper">
		<div class="header-logo">
			<a href="#">
				<div>
					<img src="https://assets.codepen.io/285131/untitled-ui-icon.svg" />
				</div>
				<img src="https://assets.codepen.io/285131/untitled-ui.svg" />
			</a>
		</div>
		<div class="header-navigation">
			<nav class="header-navigation-links">
				<a href="#"> Home </a>
				<a href="#"> Dashboard </a>
				<a href="#"> Projects </a>
				<a href="#"> Tasks </a>
				<a href="#"> Reporting </a>
				<a href="#"> Users </a>
			</nav>
			<div class="header-navigation-actions">
				<a href="#" class="button">
					<i class="ph-lightning-bold"></i>
					<span>Upgrade now</span>
				</a>
				<a href="#" class="icon-button">
					<i class="ph-gear-bold"></i>
				</a>
				<a href="#" class="icon-button">
					<i class="ph-bell-bold"></i>
				</a>
				<a href="#" class="avatar">
					<img src="https://assets.codepen.io/285131/hat-man.png" alt="" />
				</a>
			</div>
		</div>
		<a href="#" class="button">
			<i class="ph-list-bold"></i>
			<span>Menu</span>
		</a>
	</div>
</header>
<main class="main">
	<div class="responsive-wrapper">
		<div class="main-header">
			<h1>Settings</h1>
			<div class="search">
				<input type="text" placeholder="Search" />
				<button type="submit">
					<i class="ph-magnifying-glass-bold"></i>
				</button>
			</div>
		</div>
		<div class="horizontal-tabs">
			<a href="#">My details</a>
			<a href="#">Profile</a>
			<a href="#">Password</a>
			<a href="#">Team</a>
			<a href="#">Plan</a>
			<a href="#">Billing</a>
			<a href="#">Email</a>
			<a href="#">Notifications</a>
			<a href="#" class="active">Integrations</a>
			<a href="#">API</a>
		</div>
		<div class="content-header">
			<div class="content-header-intro">
				<h2>Intergrations and connected apps</h2>
				<p>Supercharge your workflow and connect the tool you use every day.</p>
			</div>
			<div class="content-header-actions">
				<a href="#" class="button">
					<i class="ph-faders-bold"></i>
					<span>Filters</span>
				</a>
				<a href="#" class="button">
					<i class="ph-plus-bold"></i>
					<span>Request integration</span>
				</a>
			</div>
		</div>
		<div class="content">
			<div class="content-panel">
				<div class="vertical-tabs">
					<a href="#" class="active">View all</a>
					<a href="#">Developer tools</a>
					<a href="#">Communication</a>
					<a href="#">Productivity</a>
					<a href="#">Browser tools</a>
					<a href="#">Marketplace</a>
				</div>
			</div>
			<div class="content-main">
				<div class="card-grid">
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/zeplin.svg" /></span>
								<h3>Zeplin</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Collaboration between designers and developers.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/github.svg" /></span>
								<h3>GitHub</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Link pull requests and automate workflows.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/figma.svg" /></span>
								<h3>Figma</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Embed file previews in projects.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/zapier.svg" /></span>
								<h3>Zapier</h3>
							</div>
							<label class="toggle">
								<input type="checkbox">
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Build custom automations and integrations with apps.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/notion.svg" /></span>
								<h3>Notion</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Embed notion pages and notes in projects.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/slack.svg" /></span>
								<h3>Slack</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Send notifications to channels and create projects.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/zendesk.svg" /></span>
								<h3>Zendesk</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Link and automate Zendesk tickets.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/jira.svg" /></span>
								<h3>Atlassian JIRA</h3>
							</div>
							<label class="toggle">
								<input type="checkbox">
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Plan, track, and release great software.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/dropbox.svg" /></span>
								<h3>Dropbox</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Everything you need for work, all in one place.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/google-chrome.svg" /></span>
								<h3>Google Chrome</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Link your Google account to share bookmarks across your entire team.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/discord.svg" /></span>
								<h3>Discord</h3>
							</div>
							<label class="toggle">
								<input type="checkbox" checked>
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Keep in touch with your customers without leaving the app.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
					<article class="card">
						<div class="card-header">
							<div>
								<span><img src="https://assets.codepen.io/285131/google-drive.svg" /></span>
								<h3>Google Drive</h3>
							</div>
							<label class="toggle">
								<input type="checkbox">
								<span></span>
							</label>
						</div>
						<div class="card-body">
							<p>Link your Google account to share files across your entire team.</p>
						</div>
						<div class="card-footer">
							<a href="#">View integration</a>
						</div>
					</article>
				</div>
			</div>
		</div>
	</div>
</main>
!

CSS 

              
                @import url("https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

:root {
	--c-text-primary: #282a32;
	--c-text-secondary: #686b87;
	--c-text-action: #404089;
	--c-accent-primary: #434ce8;
	--c-border-primary: #eff1f6;
	--c-background-primary: #ffffff;
	--c-background-secondary: #fdfcff;
	--c-background-tertiary: #ecf3fe;
	--c-background-quaternary: #e9ecf4;
}

body {
	line-height: 1.5;
	min-height: 100vh;
	font-family: "Be Vietnam Pro", sans-serif;
	background-color: var(--c-background-secondary);
	color: var(--c-text-primary);
}

img {
	display: block;
	max-width: 100%;
}

:focus {
	outline: 0;
}

.responsive-wrapper {
	width: 90%;
	max-width: 1280px;
	margin-left: auto;
	margin-right: auto;
}

.header {
	display: flex;
	align-items: center;
	height: 80px;
	border-bottom: 1px solid var(--c-border-primary);
	background-color: var(--c-background-primary);
}

.header-content {
	display: flex;
	align-items: center;
	& > a {
		display: none;
	}
	@media (max-width: 1200px) {
		justify-content: space-between;
		& > a {
			display: inline-flex;
		}
	}
}

.header-logo {
	margin-right: 2.5rem;
	a {
		display: flex;
		align-items: center;
		div {
			// outline: 2px solid;
			flex-shrink: 0;
			position: relative;
			&:after {
				display: block;
				content: "";
				position: absolute;
				left: 0;
				top: auto;
				right: 0;
				bottom: 0;
				overflow: hidden;
				height: 50%;
				border-bottom-left-radius: 8px;
				border-bottom-right-radius: 8px;
				background-color: rgba(#fff, 0.2);
				backdrop-filter: blur(4px);
			}
		}
	}
}

.header-navigation {
	display: flex;
	flex-grow: 1;
	align-items: center;
	justify-content: space-between;
	@media (max-width: 1200px) {
		display: none;
	}
}

.header-navigation-links {
	display: flex;
	align-items: center;

	a {
		text-decoration: none;
		color: var(--c-text-action);
		font-weight: 500;
		transition: 0.15s ease;
		& + * {
			margin-left: 1.5rem;
		}

		&:hover,
		&:focus {
			color: var(--c-accent-primary);
		}
	}
}

.header-navigation-actions {
	display: flex;
	align-items: center;
	& > .avatar {
		margin-left: 0.75rem;
	}
	& > .icon-button + .icon-button {
		margin-left: 0.25rem;
	}

	& > .button + .icon-button {
		margin-left: 1rem;
	}
}

.button {
	font: inherit;
	color: inherit;
	text-decoration: none;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0 1em;
	height: 40px;
	border-radius: 8px;
	line-height: 1;
	border: 2px solid var(--c-border-primary);
	color: var(--c-text-action);
	font-size: 0.875rem;
	transition: 0.15s ease;
	background-color: var(--c-background-primary);

	i {
		margin-right: 0.5rem;
		font-size: 1.25em;
	}

	span {
		font-weight: 500;
	}

	&:hover,
	&:focus {
		border-color: var(--c-accent-primary);
		color: var(--c-accent-primary);
	}
}

.icon-button {
	font: inherit;
	color: inherit;
	text-decoration: none;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	border-radius: 8px;
	color: var(--c-text-action);
	transition: 0.15s ease;
	i {
		font-size: 1.25em;
	}

	&:focus,
	&:hover {
		background-color: var(--c-background-tertiary);
		color: var(--c-accent-primary);
	}
}

.avatar {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	border-radius: 50%;
	overflow: hidden;
}

.main {
	padding-top: 3rem;
}

.main-header {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;

	h1 {
		font-size: 1.75rem;
		font-weight: 600;
		line-height: 1.25;
		@media (max-width: 550px) {
			margin-bottom: 1rem;
		}
	}
}

.search {
	position: relative;
	display: flex;
	align-items: center;
	width: 100%;
	max-width: 340px;
	input {
		font: inherit;
		color: inherit;
		text-decoration: none;
		display: inline-flex;
		align-items: center;
		justify-content: center;
		padding: 0 1em 0 36px;
		height: 40px;
		border-radius: 8px;
		border: 2px solid var(--c-border-primary);
		color: var(--c-text-action);
		font-size: 0.875rem;
		transition: 0.15s ease;
		width: 100%;
		line-height: 1;

		&::placeholder {
			color: var(--c-text-action);
		}

		&:focus,
		&:hover {
			border-color: var(--c-accent-primary);
		}
	}

	button {
		display: inline-flex;
		align-items: center;
		justify-content: center;
		border: 0;
		background-color: transparent;
		position: absolute;
		left: 12px;
		top: 50%;
		transform: translateY(-50%);
		font-size: 1.25em;
		color: var(--c-text-action);
		padding: 0;
		height: 40px;
	}
}

.horizontal-tabs {
	margin-top: 1.5rem;
	display: flex;
	align-items: center;
	overflow-x: auto;
	@media (max-width: 1000px) {
		scrollbar-width: none;
		position: relative;
		&::-webkit-scrollbar {
			display: none;
		}
	}

	a {
		display: inline-flex;
		flex-shrink: 0;
		align-items: center;
		height: 48px;
		padding: 0 0.25rem;
		font-weight: 500;
		color: inherit;
		border-bottom: 3px solid transparent;
		text-decoration: none;
		transition: 0.15s ease;
		&:hover,
		&:focus,
		&.active {
			color: var(--c-accent-primary);
			border-bottom-color: var(--c-accent-primary);
		}

		& + * {
			margin-left: 1rem;
		}
	}
}

.content-header {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	padding-top: 3rem;
	margin-top: -1px;
	border-top: 1px solid var(--c-border-primary);
}

.content-header-intro {
	h2 {
		font-size: 1.25rem;
		font-weight: 600;
	}

	p {
		color: var(--c-text-secondary);
		margin-top: 0.25rem;
		font-size: 0.875rem;
		margin-bottom: 1rem;
	}
}

.content-header-actions {
	a:first-child {
		@media (min-width: 800px) {
			display: none;
		}
	}
}

.content {
	border-top: 1px solid var(--c-border-primary);
	margin-top: 2rem;
	display: flex;
	align-items: flex-start;
}
.content-panel {
	display: none;
	max-width: 280px;
	width: 25%;
	padding: 2rem 1rem 2rem 0;
	margin-right: 3rem;
	@media (min-width: 800px) {
		display: block;
	}
}

.vertical-tabs {
	display: flex;
	flex-direction: column;
	a {
		display: flex;
		align-items: center;
		padding: 0.75em 1em;
		background-color: transparent;
		border-radius: 8px;
		text-decoration: none;
		font-weight: 500;
		color: var(--c-text-action);
		transition: 0.15s ease;
		&:hover,
		&:focus,
		&.active {
			background-color: var(--c-background-tertiary);
			color: var(--c-accent-primary);
		}

		& + * {
			margin-top: 0.25rem;
		}
	}
}

.content-main {
	padding-top: 2rem;
	padding-bottom: 6rem;
	flex-grow: 1;
}

.card-grid {
	display: grid;
	grid-template-columns: repeat(1, 1fr);
	column-gap: 1.5rem;
	row-gap: 1.5rem;
	@media (min-width: 600px) {
		grid-template-columns: repeat(2, 1fr);
	}
	@media (min-width: 1200px) {
		grid-template-columns: repeat(3, 1fr);
	}
}

.card {
	background-color: var(--c-background-primary);
	box-shadow: 0 3px 3px 0 rgba(#000, 0.05), 0 5px 15px 0 rgba(#000, 0.05);
	border-radius: 8px;
	overflow: hidden;
	display: flex;
	flex-direction: column;
}

.card-header {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	padding: 1.5rem 1.25rem 1rem 1.25rem;
	div {
		display: flex;
		align-items: center;

		span {
			width: 40px;
			height: 40px;
			border-radius: 8px;
			display: inline-flex;
			align-items: center;
			justify-content: center;
			img {
				// max-width: 85%;
				max-height: 100%;
			}
		}

		h3 {
			margin-left: 0.75rem;
			font-weight: 500;
		}
	}
}

.toggle {
	span {
		display: block;
		width: 40px;
		height: 24px;
		border-radius: 99em;
		background-color: var(--c-background-quaternary);
		box-shadow: inset 1px 1px 1px 0 rgba(#000, 0.05);
		position: relative;
		transition: 0.15s ease;
		&:before {
			content: "";
			display: block;
			position: absolute;
			left: 3px;
			top: 3px;
			height: 18px;
			width: 18px;
			background-color: var(--c-background-primary);
			border-radius: 50%;
			box-shadow: 0 1px 3px 0 rgba(#000, 0.15);
			transition: 0.15s ease;
		}
	}

	input {
		clip: rect(0 0 0 0);
		clip-path: inset(50%);
		height: 1px;
		overflow: hidden;
		position: absolute;
		white-space: nowrap;
		width: 1px;
		&:checked + span {
			background-color: var(--c-accent-primary);
			&:before {
				transform: translateX(calc(100% - 2px));
			}
		}

		&:focus + span {
			box-shadow: 0 0 0 4px var(--c-background-tertiary);
		}
	}
}

.card-body {
	padding: 1rem 1.25rem;
	font-size: 0.875rem;
}

.card-footer {
	margin-top: auto;
	padding: 1rem 1.25rem;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	border-top: 1px solid var(--c-border-primary);
	a {
		color: var(--c-text-action);
		text-decoration: none;
		font-weight: 500;
		font-size: 0.875rem;
	}
}

html {
	&::-webkit-scrollbar {
		width: 12px;
	}

	&::-webkit-scrollbar-thumb {
		background-color: var(--c-text-primary);
		border: 4px solid var(--c-background-primary);
		border-radius: 99em;
	}
}
!

JS 

              
                // Nope. This is a concept design, so no menu or filter toggles work. But it looks good, doesn't it?
!
999px

Console