CSS set content of element to image -


i've got following class, works in major browsers except firefox pc. issue content being on regular element—ffx doesn't seem on except ::before or ::after pseudo-element. trouble is, ::after not inherit size of base element.

html

<span class="col-3 myimg"></span>

css

.col-3 {     width:    25%; }  .myimg {   /* content:    url('img.png'); works in ffx on pc */   display:    block;   position:   relative; } /* v needed ffx on pc */ .myimg::after {   background: red;   content:    url('img.png');   display:    block;   max-width:  100%; /* affects background colour */   position:   absolute;   width:      100%; /* affects background colour */ }

i don't want set height—i want height stay proportional width (which determined col-# bootstrap v3).

i don't want use bunch of image tags because means update require bunch of edits (instead of 1 central 1 css).

related question: can change height of image in css :before/:after pseudo-elements?

js fiddle

edit want image 100% width of base element (the span) , image's height scale proportionately.


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