Use correct syntax for pseudoelement

3 jobs from 323-improve-image-lightbox in 3 minutes and 18 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Lint
passed #16512
lint

00:00:53

 
  Build
passed #16513
build

00:01:15

 
  Test
passed #16514
test

00:01:08