some_codepens

001 - Multiple borders vintage frame

https://codepen.io/chris_tudor/pen/OJPeQgb

002 - Fancy Border Box

https://codepen.io/MyXoToD/pen/VaazQq

003 - Frame image and title

https://codepen.io/littlesnippets/pen/ZbemQo

004 - Cyber mouse

https://codepen.io/MarkBoots/pen/bGJJpMj

005 - Hand Drawn Border Effects

https://codepen.io/tmrDevelops/pen/NPXodB

006 - 3 shapes - CSS Gradient Rounded Borders

https://codepen.io/GeorgePark/pen/EEGJEj

007 - 18 shapes - CSS Gradient Borders

https://codepen.io/GeorgePark/pen/ZoaRrV