Animating CSS border-image
Border images are an overlooked feature. One neat fact is that border image slices can run across entire borders on an element, and animating it creates beautiful effects.
Animating CSS border-image originally handwritten and published with love on CSS-Tricks. You should really get the newsletter as well.
原文：https://www.a8q9.cn/en/article/animating-css-border-image-90492a.html