Edit on
<img src="https://lh3.googleusercontent.com/S6R3hlIIAUcaGWKadN2mp8myRdFDBFiS3TlLM4NMSSvzE49cMFin_ODX-W69biYjPrISBsvgtuhoYX-87AkXsEe1tgNc5hb2SH47aGM6EkWFyoy8xup8VDqv9g">
img{
  -webkit-filter: grayscale(100%) contrast(30%);
  filter: grayscale(100%) contrast(30%);
}

img:hover{
  -webkit-filter: none;
  filter: none;
}
Rerun