.span2 img:hover {
margin-top: 3px;
box-shadow: 25px 3px 4px black;
transition: all 0.5s;
}<div class="container container--pallax">
<div class="container__title container__title--type--pallax"></div>
</div><div class="container container--pallax">
<div class="container__title container__title--context--pallax"></div>
</div>