html - Aspect ratio for background-image, when data is image/jpeg;base64 -

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i have div background-image set data:image/jpeg;base64 format:

<div style="background-image: url(data:image/jpeg;base64,/9j/4aaq...

i show full image respecting aspect ratio, using available space. use:

width: 90vw; height: 100vh; background-size: contain; background-repeat: no-repeat; background-position: center;

in case image stretched using full div size. suggestions?

update: div data: http://jsfiddle.net/witepo/bksmhtwc/

update 2: expected result: http://1drv.ms/1utj8nd div: http://codepen.io/anon/pen/lezpjj

try this

background-size: cover; background-repeat: no-repeat; background-position: center center;

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