html - Keep 'transform-scale' aspect ratio for iframe -

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i'm having trouble keeping 'transform-scale' attribute on aspect ratio when browser window being resized. instance, if window resized, iframe transform-scale attribute scale contents inside fit iframe width , height without resizing of sites contents. can't seem understand how achieve without using javascript or other libraries. came below:

html:

<div> <iframe id="resize" src="http://www.w3schools.com/" width="100%" height="100%"></iframe> </div>

css:

* {     margin:0;     padding:0; } div {     height: 100vw;     width: 56.25vw;     /* 100/56.25 = 1.778 */     background: skyblue;     max-height: 100vh;     max-width: 177.78vh;     /* 16/9 = 1.778 */     margin: auto;     position: absolute;     top:0;     bottom:0;     /* vertical center */     left:0;     right:0;     /* horizontal center */ } iframe {     -webkit-transform:scale(0.8);     -moz-transform-scale(0.8);     -o-transform: scale(0.8);     -ms-zoom: 0.8; }

http://jsfiddle.net/rkmyc95e/1/

all i'm trying maintain 'transform-scale' aspect ratio when window scaled.

note: can see, i'm having issues maintaining aspect ratio of iframe, can't maintain top , bottom stay in place.

the transform scale using going set width of iframe 80% of width, , height of iframe 80% of height. , won't maintaining aspect ratio.

you have iframe set 100% of parent width , height on iframe element in html. if remove 2 attributes, you'll see interesting, starting point fixed aspect ratio can start working with.

to maintain aspect ratio of either div or iframe, check out common question on se like: https://stackoverflow.com/a/10441480/3708223


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