Animated Gradient Border with CSS | Tutorial

Published: 01 April 2026
on channel: Theo Soti

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Learn how to build an animated gradient border with pure CSS.

In this video, I show how to create a glowing gradient border effect easily. No JavaScript, just modern CSS.

This effect is built with 3 simple layers:
the card content
one layer for the animated gradient border
one blurred layer for the glow

CSS features used:
@property https://caniuse.com/mdn-css_at-rules_...
conic-gradient() https://caniuse.com/mdn-css_types_gra...
filter: blur() https://caniuse.com/css-filters
prefers-reduced-motion https://caniuse.com/prefers-reduced-m...
::before and ::after https://caniuse.com/mdn-css_selectors...

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Here's a link if you want to see the full code & live effect: https://codepen.io/editor/theosoti/pe...

#css #webdevelopment #frontend #cssanimation #gradient #nojavascript #webdesign #webdev #front #frontenddevelopment #borderdesign

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