Assalamualaikum and annyeonghaseyo. Kinda short tuto. Okay adios.
1. Copy paste this code before the code </style>.
img{
opacity:1;
-webkit-transition:All 1s ease;
-moz-transition:All 1s ease;
-o-transition:All 1s ease;
}
img:hover{
opacity:0.1;
}
2. Preview & save.