Expand and Collapse Content using CSS

Demo Download

CSS Expand/Collapse Section. A Pen By Peter Nguyen, very useful and simple..

Site builders who are comfortable editing HTML directly can add expanding/collapsing (accordion) content sections (the expand/collapse functionality is used on web page!) to minimize any content page or text.

HTML Code

<main>
<h2>CSS Expand/Collapse Section</h2>
<input id="toggle" type="checkbox" checked>
<label for="toggle">Hidden Kitten</label>
<div id="expand">
<section>
<p>mew</p>
</section>
</div>
<section>
<h3>Other content</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Maecenas porta non turpis faucibus lobortis. Curabitur non eros rutrum, gravida felis non, luctus velit. Ut commodo congue velit feugiat lobortis. Etiam nec dolor quis nulla bibendum blandit vitae nec enim. Maecenas id dignissim erat. Aenean ac mi nec ante venenatis interdum quis vel lacus.
</p>
<p>Aliquam ligula est, aliquet et semper vitae, elementum eget dolor. In ut dui id leo tristique iaculis eget a dui. Vestibulum cursus, dolor sit amet lacinia feugiat, turpis odio auctor nisi, quis pretium dui elit at est. Pellentesque lacus risus, vulputate sed gravida eleifend, accumsan ac ante. Donec accumsan, augue eu congue condimentum, erat magna luctus diam, adipiscing bibendum sem sem non elit.</p>
</section>
</main>

CSS Code

@import url(http://fonts.googleapis.com/css?family=Open+Sans:400,700);

body {
font-family: "Open Sans", Arial;
background: #CCC;
}
main {
background: #EEE;
width: 600px;
margin: 20px auto;
padding: 10px 0;
box-shadow: 0 3px 5px rgba(0,0,0,0.3);
}
h2 {
text-align: center;
}
p {
font-size: 13px;
}
input {
display: none;
visibility: hidden;
}
label {
display: block;
padding: 0.5em;
text-align: center;
border-bottom: 1px solid #CCC;
color: #666;
}
label:hover {
color: #000;
}
label::before {
font-family: Consolas, monaco, monospace;
font-weight: bold;
font-size: 15px;
content: "+";
vertical-align: text-top;
display: inline-block;
width: 20px;
height: 20px;
margin-right: 3px;
background: radial-gradient(ellipse at center, #CCC 50%, transparent 50%);
}
#expand {
height: 0px;
overflow: hidden;
transition: height 0.5s;
background: url(http://placekitten.com/g/600/300);
color: #FFF;
}
section {
padding: 0 20px;
}
#toggle:checked ~ #expand {
height: 250px;
}
#toggle:checked ~ label::before {
content: "-";
}

Hope it was helpful....