How to add image hover to your blog - Style 7

1. Blogskins/ Classic template : Paste the codes giver before/above </style>

2. Template designer : Paste codes given before/above ]]></b:skin> 

img{ -webkit-transition:All 1s ease; -moz-transition:All 1s ease; -o-transition:All 1s ease; } img:hover{ -webkit-filter: grayscale(0.8);}