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HTML

CSS

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JavaScript

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HTML

              
                h3 Working image

img src="https://via.placeholder.com/200" alt="This is an image"

h3 Broken image with custom CSS background
ul
	li red - img background (Safari)
	li green - img::before background (Chrome, Firefox)

img src="asd.jpg" alt="This is an image"

h3 
	| Alternative for Firefox, using 
	i img:-moz-broken 
	| selector - should be blue in Firefox

img src="asd.jpg" alt="This is an image" class="firefox"

h3 Safari shows the broken image icon
p
	| It's impossible to get rid of it with just CSS, but we can check if the image is valid using 
	i onerror
	| , and then we can either:
	ul
		li remove the src - icon is gone, but there is still a slight border around
		li change the image to a div, and do whatever we want :)

img src="asd.jpg" alt="This is an image" onerror="this.src=''"
              
            
!

CSS

              
                body
	font-family: sans-serif

img
	-moz-force-broken-image-icon: 0
	background-color: red
	color: transparent
	display: block
	height: 200px
	margin-bottom: 50px
	position: relative
	width: 200px

img::before
	background-color: green
	bottom: 0
	content: ''
	left: 0
	position: absolute
	right: 0
	top: 0

img.firefox
	&,	
	&::before
		background-color: transparent

	&:-moz-broken
		background-color: blue

              
            
!

JS

              
                
              
            
!
999px

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