:only-of-type
Targets an element that is the ONLY child of its type among its siblings. For example, 'the only image' in a div, even if there's also text.
Quick example
img:only-of-type {
/* Centers the image if it's the only image in its container */
display: block;
margin: 0 auto;
} :only-of-type Browser Support
Widely available Since 2015 96% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
Safe to use without fallbacks.
1+
3.5+
3.1+
12+