html - How to change img width but keep original height in css? -


in css, how can change image width twice big, keep height same original height?

i tried 

img {     width : 400px;     height : auto; }

it should work ie11+. images being dynamically loaded, don't know original height, know width (its specified parameter).

but not work

twice big or 400px wide?

to make twice (or whatever x times bigger or smaller) use css3 scale transformation.

img {   transform: scale(2); }

this grow image in place in directions maybe want move bit:

img {   transform: scale(2) translate(25%, 25%); }

see css3 transform functions. pretty useful.


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