السلام عليكم ورحمة الله وبركاته – بسم الله الرحمن الرحيم

img{

    border:none;

    opacity:0.3;

    -webkit-transition: all 0.6s ease-in-out;

    -moz-transition:all 0.6s ease-in-out;

    -o-transition: all 0.6s ease-in-out;

    -moz-box-shadow:0px 0px 8px #000;

    -webkit-box-shadow:0px 0px 8px #000;

    -khtml-box-shadow:0px 0px 8px #000;

    box-shadow:0px 0px 8px #000;

}

img:hover{

    opacity:1.0;

}

<style type="text/css">

img{

border:none;

opacity:0.3;

-webkit-transition: all 0.6s ease-in-out;

-moz-transition:all 0.6s ease-in-out;

-o-transition: all 0.6s ease-in-out;

-moz-box-shadow:0px 0px 8px #000;

-webkit-box-shadow:0px 0px 8px #000;

-khtml-box-shadow:0px 0px 8px #000;

box-shadow:0px 0px 8px #000;

}

img:hover{

opacity:1.0;

}

</style>

</head>