Прикольно (+/-)
<style type="text/css">
.alarm{ position: relative; padding: 0 0; margin: 0 auto; width: 700px; }
.img-big{ width:100%; }
.img-left{ position: absolute; top:0; left:0; border-radius: 50%; }
.img-right{ position: absolute; top:0; right:0; border-radius: 50%; }
</style>
<div class="alarm">
<img class="img-big" src="http://localhost:3000/1.jpg" alt=""/>
<img class="img-left" src="http://localhost:3000/1.gif" alt=""/>
<img class="img-right" src="http://localhost:3000/1.gif" alt=""/>
</div>
