I am only wanting iteration-count to run once, but afterwords, I would like my image to remain on the page indefinitely. 
Is there anyway to accomplish this with css or will I need to apply a javascript method?
#contact-success-animation {
 width: 100px;
 height: 100px;
 position: relative;
 margin: auto auto;
 -webkit-animation-name: success-animation; /* Chrome, Safari, Opera */
    -webkit-animation-duration: 15s; /* Chrome, Safari, Opera */
    -webkit-animation-iteration-count: 1; /* Chrome, Safari, Opera */
    -webkit-animation-direction: normal; /* Chrome, Safari, Opera */
 animation-name: success-animation;
    animation-duration: 15s;
    animation-iteration-count: 1;
    animation-direction: normal;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes success-animation {
    0%   {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
    33%  {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
    66%  {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
    100% {background-image: url("); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
}
/* Standard syntax */
@keyframes success-animation {
    0%   {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
    33%  {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
    66%  {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
    100% {background-image: url(""); background-repeat: no-repeat;
background-size: 100% auto; height: 100px; width: 100px;}
}<div id="contact-success-animation"></div> 
    