<div class="accordion">
    <div id="one" class="section">
            <h3>
                    <a href="#one">Heading 1</a>
            </h3>
            <div>
                    <p>Content</p>
            </div>
    </div>
    <div id="two" class="section">
            <h3>
                    <a href="#two">Heading 2</a>
            </h3>
            <div>
                    <p>Content</p>
            </div>
    </div>
</div>​




.accordion h3 + div {
        height: 0;
        overflow: hidden;
        -webkit-transition: height 0.3s ease-in;
        -moz-transition: height 0.3s ease-in;
        -o-transition: height 0.3s ease-in;
        -ms-transition: height 0.3s ease-in;
        transition: height 0.3s ease-in;
}

.accordion :target h3 + div {
        height: 100px;
}

.accordion .section.large:target h3 + div {
        overflow: auto;
}

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