Exemple de code de la propriété CSS animation-iteration-count.

<style>
.box{ border:1px solid #666; width:90%; margin-bottom:5px; padding:5px; 
 animation-duration : 5s; 
 animation-delay : 3s; 
}

#animation-iteration-count-number {
 animation-iteration-count : 3; 
 animation-name : animation; 
}

#animation-iteration-count-infinite{
 animation-iteration-count : infinite; 
 animation-name : animation; 
}

@keyframes animation{
 from { width: 90% }
 to { width: 100px; }
}
</style>

<div class="box" id="animation-iteration-count-number"> animation-iteration-count : 3 </div>
<div class="box" id="animation-iteration-count-infinite"> animation-iteration-count : infinite </div>