This key frame is move after every 5 seconds .
For add the swinging keyframe animation follow this:Simply add this html code in your BODY sections of your page.That's all.
<img class="swing" src="winter.jpg" />
<img class="swing" src="winter.jpg" style="
animation-delay: 0.8s;
-webkit-animation-delay: 0.8s;
-moz-animation-delay: 0.8s;
animation-delay: 0.8s;
"
/>
<img class="swing" src="winter.jpg" style="
animation-delay: 0.5s;
-webkit-animation-delay: 0.5s;
-moz-animation-delay: 0.5s;
animation-delay: 0.5s;
"
/>