Creating a Border Animation Effect with SVG and CSS

Today we’d like to explore a very subtle, but interesting border animation effect that can be seen on the creative website of Carl Philipe Brenner. When you hover over one of the white portfolio items in the grid, you will see a subtle animation happening: the grid item becomes transparent and the border lines of each side animate clockwise, creating a really nice effect. In this case, the effect is done by animating the widths or heights of several spans with some JS. We’ll try a different approach that uses SVG and CSS transitions.