Frameworks/MapKit.framework/Versions/A/Resources/Animations.css
@-webkit-keyframes grow {
    0% {
        -webkit-transform:scale(1.0);
        opacity:0.8;
    }
    50% {
        -webkit-transform:scale(0.90);
        opacity:1.0;
    }
    100% {
        -webkit-transform:scale(1.0);
        opacity:0.8;
    }
}

.growAnimation {
    -webkit-animation-name: grow;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-direction: normal;
    -webkit-animation-duration: 1.25s;
    -webkit-transform: rotatex(0deg);
    -webkit-transform-origin: middle middle;
    -webkit-animation-transition-timing-function: ease-in;
}

@-webkit-keyframes drop {
 0% {
   -webkit-transform: translateY(-100px);
 }
 100% {
   -webkit-transform: translateX(0%);
 }
}

.dropAnimation
{
    -webkit-animation-name: drop;
    -webkit-animation-duration: 0.30s;
    -webkit-iteration-count: 1;
    -webkit-animation-timing-function: ease-in;
}

@-webkit-keyframes annotationCalloutPulse {
 0% {
   opacity: 1.0;
   -webkit-transform: scale(0.75);
 }
 33% {
   opacity: 0.95;
   -webkit-transform: scale(1.08);
 }
 66% {
   opacity: 0.95;
   -webkit-transform: scale(0.92);
 }
 100% {
   opacity: 1.0;
   -webkit-transform: scale(1.0);
 }
}

.annotationCalloutPulseAnimation {
 -webkit-animation-name: annotationCalloutPulse;
 -webkit-animation-duration: 0.40s;
 -webkit-iteration-count: 1;
 -webkit-animation-timing-function: ease-in-ease-out;
}