Fixed the height of the background image to make the width adaptive and the background image adaptive

Fixed the height of the background image to make the width adaptive and the background image adaptive

Set the height of the container to in width, and set background-size to cover. When the width is insufficient, the two sides of the background image are hidden.

Set the height of the class to con container as follows. Adaptive width

. Con {width: 100%; height: 300px; background: url ("image/vpb_intro/introduce_9.png") center no-repeat; background-size: cover; filter: progid: DXImageTransform. microsoft. alphaImageLoader (src = 'image/vpb_intro/introduce_9.png ', sizingMethod = 'Scale ');}