<button type="button" class="slds-button slds-button_brand" data-toggle="collapse" data-target="#demo">Simple collapsible</button>
<br/>
<br/>
<div id="demo" class="collapse">
    <div class="slds-box">
        Lorem ipsum dolor sit amet, consectetur adipisicing elit,<br/>
        sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,<br/>
        quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.<br/>
    </div>
</div>