CSS background-color background-color : color : See the Pen <a href='http://codepen.io/w3tr/pen/yJEyNd/'>CSS background-color</a> by W3TR (<a href='http://codepen.io/w3tr'>@w3tr</a>) on <a href='http://codepen.io'>CodePen</a>.<br /> See the Pen <a href='http://codepen.io/w3tr/pen/xOzbwO/'>CSS background-color2</a> by W3TR (<a href='http://codepen.io/w3tr'>@w3tr</a>) on <a href='http://codepen.io'>CodePen</a>.<br /> See the Pen <a href='http://codepen.io/w3tr/pen/mEKyZp/'>CSS background-color3</a> by W3TR (<a href='http://codepen.io/w3tr'>@w3tr</a>) on <a href='http://codepen.io'>CodePen</a>.<br /> transparent : See the Pen <a href='http://codepen.io/w3tr/pen/rLKaOX/'>CSS background-color4</a> by W3TR (<a href='http://codepen.io/w3tr'>@w3tr</a>) on <a href='http://codepen.io'>CodePen</a>.<br />