Margin removed from childen elements

Top margin from first child elemnt and bottom margin from last child element are removed. liquam vitae ligula iaculis, sodales ligula facilisis, rhoncus lacus. Proin a eros erat. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Praesent velit tellus, auctor sit amet dolor at, consequat pulvinar lacus.