:has() performance snapshots

This page tests restyle performance with :has().

To determine the absolute level of restyle performance with :has(), this test compares the restyle performance with and without :has(). Also, this test shows how the restyle processing time increases as the number of non-matching style rules increases. For each step of checking processing time, the operations will be called multiple times to get average performance of each operation. Due to this, this test will take some time.