Ответ 1
Да, просто добавьте (или версии с префиксом поставщика) в CSS:
$('#t').click(
function(){
$('#box').toggleClass('shadow');
});
#box {
width: 50px;
height: 200px;
-webkit-transition: all 1s linear;
-o-transition: all 1s linear;
-moz-transition: all 1s linear;
-ms-transition: all 1s linear;
-kthtml-transition: all 1s linear;
transition: all 1s linear;
}
.shadow {
-webkit-box-shadow: 0px 0px 4px 2px #D50E0E;
-moz-box-shadow: 0px 0px 4px 2px #D50E0E;
box-shadow: 0px 0px 4px 2px #D50E0E;
-webkit-transition: all 1s linear;
-o-transition: all 1s linear;
-moz-transition: all 1s linear;
-ms-transition: all 1s linear;
-kthtml-transition: all 1s linear;
transition: all 1s linear;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button id="t">Toggle the 'shadow' class</button>
<div id="box">Some content in the 'box' div.</div>