<div class="uk-section uk-section-default uk-flex uk-flex-middle" uk-height-viewport>
    <div class="uk-width-1-1">
        <div class="uk-container">

            <div class="uk-child-width-expand@m" uk-grid>
                <div>

                    <div class="uk-padding uk-background-muted">
                        <h3>Default</h3>
                        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
                    </div>

                </div>
                <div>

                    <div class="uk-padding-small uk-background-muted">
                        <h3>Small</h3>
                        <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum.</p>
                    </div>

                </div>
                <div>

                    <div class="uk-padding-large uk-background-muted">
                        <h3>Large</h3>
                        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
                    </div>

                </div>
            </div>
        </div>
    </div>
</div>
