So I've just discovered viewport units, and I really want to use them.
First challenge: My element has a "base size" of 760x670 pixels. I want to use viewport units to scale it up so that either the height is 100vh
, or the width is 100vw
, whichever is smaller.
Unfortnately, although I can use 100vmin
to get the smaller of the two, I can only apply it to the width or the height, not both.
Currently I'm using:
#root {
width: 760px;
height: 670px;
width: 100vw;
height: calc(670vw/760);
}
This scales the width to fit the screen, resulting in vertical scrolling. This isn't too bad, but I'd prefer it if I could actually have it fit the viewport.
I've made it work in IE10:
#elem {
width: 100vw;
height: calc((9/16)*100vw);
}
@media (min-aspect-ratio:16/9) {
#elem {
height: 100vh;
width: calc((16/9)*100vh);
}
}
Live demo: http://jsfiddle.net/C2ZGR/show/ (open in IE10 (preview version available for Windows 7); then re-size window, so that either the width, or height is very small)
I've used an element with the aspect ratio of 16:9, but the code can work for any aspect-ratio - just replace 16/9
, and 9/16
with your desired aspect ratio.
Btw, IE10 is the only browser in which this demo will work. Firefox/Opera don't implement viewport units yet, and the WebKit browsers currently have a bug where viewport units cannot be used inside calc()
.