<h1>Pure CSS Slideshow</h1>
<div class="container">
	<div class="slideshow">
		<div id="slide-1" class="slide">
			<a href="#slide-7"></a>
			<a href="#slide-2"></a>
			<img src="https://c1.staticflickr.com/9/8724/16310801553_cea90ae63d_n.jpg" />
		</div>
		<div id="slide-2" class="slide">
			<a href="#slide-1"></a>
			<a href="#slide-3"></a>
			<img src="https://c2.staticflickr.com/4/3719/19819674272_2384feaaf8_n.jpg" />
		</div>
		<div id="slide-3" class="slide">
			<a href="#slide-2"></a>
			<a href="#slide-4"></a>
			<img src="https://c2.staticflickr.com/2/1627/24319275501_3ec6f36fa7_n.jpg" />
		</div>
		<div id="slide-4" class="slide">
			<a href="#slide-3"></a>
			<a href="#slide-5"></a>
			<img src="https://c2.staticflickr.com/2/1460/25194537936_e3c54faefc_n.jpg" />
		</div>
		<div id="slide-5" class="slide">
			<a href="#slide-4"></a>
			<a href="#slide-6"></a>
			<img src="https://c2.staticflickr.com/2/1460/26216238325_9c425923a7_n.jpg" />
		</div>
		<div id="slide-6" class="slide">
			<a href="#slide-5"></a>
			<a href="#slide-7"></a>
			<img src="https://c2.staticflickr.com/8/7578/26194232483_8204bf119b_n.jpg" />
		</div>
		<div id="slide-7" class="slide">
			<a href="#slide-6"></a>
			<a href="#slide-1"></a>
			<img src="https://c2.staticflickr.com/8/7106/26862741906_d5283c42ba_n.jpg" />
		</div>
	</div>
  <div class="pagination">
    <a href="#slide-1"><span>1</span></a>
    <a href="#slide-2"><span>2</span></a>
    <a href="#slide-3"><span>3</span></a>
    <a href="#slide-4"><span>4</span></a>
    <a href="#slide-5"><span>5</span></a>
    <a href="#slide-6"><span>6</span></a>
    <a href="#slide-7"><span>7</span></a>
  </div>
</div>

<aside>

  <h2>About</h2>

  <p>I wanted to create a pure CSS image slideshow and this is the result.</p>

  <p>This slideshow was created using just CSS and HTML. Click anywhere on the left half to go to the previous slide, anywhere on the right half to go to the next slide. Oh and it loops in a carousel.</p>

  <p>There's pagination too so you can jump to any slide.</p>

  <h2>What could be improved?</h2>

  <ul>
    <li>Highlight the current slide in the pagination</li>
    <li>Prevent page jump when using pagination</li>
    <li>Automatically cycle through images</li>
  </ul>
  
</aside>
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;600&display=swap');

body {
  background: linear-gradient(-45deg, #83a4d4, #b6fbff);
  font-family: 'Open Sans', sans-serif;
}

h1 {
  text-align: center;
}

h1,
aside,
.container {
  margin: 0 auto 20px;
  max-width: 500px;
}

.container {
  border-radius: 5px;
  margin: 0 auto;
  position: relative;
  transition: box-shadow 200ms;
  &:hover {
    box-shadow: 0 10px 50px -10px rgba(0,0,0,0.25);
  }
}
.slideshow {
	position: relative;
	width: 100%;
	&:after {
		content: '';
		display: block;
		padding-bottom: calc((100% / 6) * 4);
	}
	&:hover a {
		opacity: 1;
	}
	a {
		opacity: 0;
		position: relative;
		text-decoration: none;
		transition: opacity 0.5s;
		&:after {
			border-color: #FFF #FFF transparent transparent;
			border-style: solid;
			border-width: 2px;
			color: #FFF;
			display: block;
			height: 10px;
			position: absolute;
			top: calc(50% - 5px);
			width: 10px;
		}
		&:first-child:after {
			content: '';
			left: 10px;
			transform: rotate(-135deg);
		}
		&:nth-child(2):after {
			content: '';
			right: 10px;
			transform: rotate(45deg);
		}
	}
	.slide {
		background-color: #FFF;
		box-sizing: border-box;
		display: none;
		height: 100%;
		position: absolute;
		width: 100%;
		&:first-child,
		&:target {
			display: block;
		}
		a {
			display: block;
			height: 100%;
			position: absolute;
			width: 50%;
			&:nth-child(2) {
				left: 50%;
			}
		}
		img {
      border-radius: 5px;
			width: 100%;
		}
	}
}
.pagination {
  display: flex;
  bottom: 10px;
  justify-content: center;
  position: absolute;
  width: 100%;
  a {
    background: rgba(#FFF,0.75);
    border-radius: 50%;
    display: block;
    height: 10px;
    width: 10px;
    &:not(:last-child) {
      margin-right: 5px;
    }
    span {
      display: none;
    }
  }
}

a:target {
	color: red;
}
View Compiled
Run Pen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.