jquery - Background Image of a div that is responsive in bootstrap 3 -

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i need make background image of header div background image of mr. bill gates in http://www.gatesnotes.com/about-bill-gates/summer-books-2015

the header background image of mr. bill gates didn't change height screen small.

i tried background-size:cover still height changed when screen small.

i place background-size:cover custom.css in bootstrap folders.

check demo : https://jsfiddle.net/w8f0mkbg/1/

html

<div id="image">     <img src="http://stylonica.com/wp-content/uploads/2014/02/nature-wallpaper-362.jpeg"> </div>

css

#image img {     min-width: 100%;     width: 100%;     height: auto; }

background image centered responsive demo: https://jsfiddle.net/yeyene/905pc2p0/


*there still lots of ways too, can try out , see of them;

css tricks: https://css-tricks.com/perfect-full-page-background-image/

smashing: http://www.smashingmagazine.com/2013/07/22/simple-responsive-images-with-css-background-images/


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