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HTML 

              
                <header>
	<div class="hero"></div>
</header>
<div class="container">
	<div id="profileDetails">
		<div class="logo">
			<img src="https://cdn1.iconfinder.com/data/icons/social-messaging-productivity-1-1/128/gender-male2-512.png" alt="profileicon">
		</div>
		<div class="profile">
			<h1>Bio:</h1>
			<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. A consequatur iste quod facilis deleniti aperiam voluptate doloribus molestiae.</p>
			<div class="socialLinks">
				<a href="#"><i class="fa fa-twitter-square" aria-hidden="true"></i>
</a>
				<a href="#"><i class="fa fa-pinterest-square" aria-hidden="true"></i>
</a>
				<a href="#"><i class="fa fa-facebook-official" aria-hidden="true"></i></a>
			</div>
		</div>
	</div>
	<div class="contentContainer">
		<header class="tabs">
			<div class="tab">All</div>
			<div class="tab">Animals</div>
			<div class="tab">Landscapes</div>
			<div class="tab">Buildings</div>
		</header>
		<div class="tabBorder"></div>
		<main>
			<div class="gallery">
				<figure data-category="landscape">
				  <img src="https://images.unsplash.com/photo-1413752567787-baa02dde3c65?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=00dab0342c1b6498228d16e4a7d82ad3&w=1000&q=80" alt="landscape">
				  <figcaption>Landscape</figcaption>
				</figure>
				
				<figure data-category="landscape" >
				  <img src="https://d2v9y0dukr6mq2.cloudfront.net/video/thumbnail/Wj2ycoF/beautiful-tropical-beach-scene-with-tilting-up-camera_vh_zkr-_e__F0000.png" alt="landscape">
				  <figcaption>A beautiful beach and blue sea</figcaption>
				</figure>
				
				<figure data-category="building">
				  <img src="http://www.diamzon.com/wp-content/uploads/2016/11/makaticbd-990x530.jpg" alt="building">
				  <figcaption>City</figcaption>
				</figure>
				
				<figure data-category="landscape">
				  <img src="https://cdn10.bostonmagazine.com/wp-content/uploads/sites/2/2017/08/sunflower-field-new-england.jpg" alt="sunflowers">
				  <figcaption>Sunflower fields</figcaption>
				</figure>
				
				<figure data-category="animals" >
				  <img src="https://i.ytimg.com/vi/xkxjNZComZg/maxresdefault.jpg" alt="hamster">
				  <figcaption>Animals - Hamster</figcaption>
				</figure>
				
				<figure data-category="animals">
				  <img src="https://r.hswstatic.com/w_907/gif/tesla-cat.jpg" alt="cat">
				  <figcaption>Animal - Cat</figcaption>
				</figure>
				
				<figure data-category="building" >
				  <img src="https://images.pexels.com/photos/302769/pexels-photo-302769.jpeg" alt="building">
				  <figcaption>Building in a street</figcaption>
				</figure>
			</div>
		</main>
	</div>
</div>
<div class="overlay">
</div>
!

CSS 

              
                *, *:after, *:before {
	box-sizing: inherit;
}

html {
	box-sizing: border-box;
	font-size: 10px;
}
body {
	font-size: 1.7rem;
	background-color: #a0a0d0;
}

a {
	color: black;
	text-decoration: none;
}
h1 {
	font-size: 2.4rem;
}
h2 {
	font-size: 2.3rem;
}
h3 {
	font-size: 2.2rem;
}
.container {
	width: 95%;
	margin: 0 auto 3rem;
	background: #d1d1d1;
	padding: 0 1em;
	border-radius: 0 0 10px 10px;
	box-shadow: 1px 1px 10px black;
	@media (min-width: 640px) {
	width: 80%;	
	}
}

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

header .hero {
	background: url('http://interfacelift.com/wallpaper/previews/02105_blueforest_672x420.jpg') no-repeat;
	background-size: cover;
	height: 20vh;
	display:block;
	position: relative;
	z-index: 1;
}

#profileDetails {
	
	.logo {
		width: 40%;
		margin: 0 auto;
		padding: 1em 0;
		
		@media (min-width: 640px) {
			width: 30%;	
		}
	}
	.profile {
		@media (min-width: 640px) {
			width: 50%;
		}
	}
	.socialLinks .fa {
		font-size: 5rem;
		color: slateblue;
		padding: 0 2rem 0 0;
		transition: all .5s ease-out;
		&:hover {
			color: darken(slateblue, 40%);
		}
	}
	@media (min-width: 640px) {
		display: flex;
		justify-content: space-between;
	}
}
header.tabs {
	cursor:pointer;
	@media (min-width: 640px) {
		border-radius: 15px;
		display: flex;
		justify-content: space-between;
	}
}
.tabBorder {
	border-bottom: 15px solid slateblue;
}
.tab {
	width: 100%;
	background-color: slateblue;
	color: white;
	font-weight: 700;
	padding: 1em;
	text-align: center;
	margin: .5em 0;
	transition: all .5s ease-out;
	@media (min-width: 640px) {
		border-radius: 10px 10px 0 0;
		margin: .5em .5em 0;
		padding: .5em 0;
	}
	&:hover {
		background-color: darken(slateblue, 10%);
	}
}
main .gallery {
	display: flex;
	flex-wrap:wrap;
	
	figure {
		width: 45%;
		margin: 2.5%;
		border: 5px solid white;
		box-shadow: 1px 1px 10px black;
		
		figcaption {
			padding: 1em .5em;
			background-color: rgba(0,0,0,.2);
		}
		@media (min-width:740px) {
			width: 28%;
		}
		
		@media (min-width:1024px) {
			width: 20%;
		}
	}
}

.overlay {
	position: absolute;
	height: 100vh;
	top: 0;
	background-color: rgba(0,0,0, 0.8);
	z-index: 2;
	width: 100%;
	display: none;
	
	img {
		border: 25px solid white;
		border-radius: 10px;
		position: absolute;
		top: 25vh;
		left: 4%;
		width: 92%;
		margin: 0 auto;
		display:block;
	}
	#close {
		position: absolute;
		z-index: 3;
		top: 25.5vh;
		right: 4.5%;
		display: none;
	}
	.fa {
		color: black;
		font-size:20px;
		transition: all .5s ease-out;
			&:hover {
				color: tomato;
				transform: rotate(20deg);
			}
		}
}
!

JS 

              
                let figures = document.querySelectorAll('figure');
let images = document.querySelectorAll('figure img');

let overlay = document.querySelector('.overlay');
let tab = document.querySelectorAll('.tab');
let closeBtn;

// loop and add eventlistener on click.
Array.from(images).forEach(image => {
	image.addEventListener('click', function(){
	
	// assign image src and alt to src and alt variables.
	let src = image.src;
	let alt = image.alt;
	// turning the overlay div to block;
	overlay.style.display = 'block';
		
	// adding the image and close button inside the overlay div.
	overlay.innerHTML = `<img src="${src}" alt=${alt}/>
								<div id="close">
								<i class="fa fa-window-close-o" aria-hidden="true"></i>
								</div>`;
		
	// Selecting the close element
	closeBtn = document.getElementById('close');
	// setting the close button to block
	closeBtn.style.display = 'block';
		
		// Close function -- to Close Image
		closeBtn.addEventListener('click', function(){
			//setting the overlay back to none
			overlay.style.display = 'none';
		})
	});
});

// Click event on the TABS ------ to filter photos.
Array.from(tab).forEach(t => {
	t.addEventListener('click', (e)=>{
		
		// if all photos - Display them all.
		if(e.target.textContent === 'All'){
			
			Array.from(figures).forEach(fig => {
			let data = fig.dataset.category;
				
				if(data){
					console.log(data);
					fig.style.display = 'block';
				}
			});
			
		} else if (e.target.textContent == 'Animals') {
			
			Array.from(figures).forEach(fig => {
				let data = fig.dataset.category;
				data != 'animals' ? fig.style.display = 'none' : fig.style.display = 'block';
			
			});
			
		} else if (e.target.textContent === 'Landscapes') {
			// console.log('landscape photos')
			Array.from(figures).forEach(fig => {
				let data = fig.dataset.category;
				//nsole.log(data);
				data != 'landscape' ? fig.style.display = 'none' : fig.style.display = 'block';
			});
		} else if (e.target.textContent === 'Buildings') {
			// console.log('landscape photos')
			Array.from(figures).forEach(fig => {
				let data = fig.dataset.category;
				//nsole.log(data);
				data != 'building' ? fig.style.display = 'none' : fig.style.display = 'block';
			});
		}
	})
});
!
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