Edit in JSFiddle

body {
    background: #016C38;
    color: #fff;
}
.mt-scene-label {
    width: 100px;
    height: 100px;
    display: block;
    margin: 10px;
    padding: 0px;
}
img {
    width: 64px;
    height: 64px;
}
.mt-imagerotationeffect img {
    -webkit-transition-duration: 0.5s;
    -moz-transition-duration: 0.5s;
    -o-transition-duration: 0.5s;
    transition-duration: 0.5s;
    -webkit-transition-property: -webkit-transform;
    -moz-transition-property: -moz-transform;
    -o-transition-property: -o-transform;
    transition-property: transform;
    overflow: auto;
}
.mt-imagerotationeffect:hover img {
    animation: imagerotation 0.5s linear infinite;
    -moz-animation: imagerotation 0.5s linear infinite;
    -webkit-animation: imagerotation 0.5s linear infinite;
}
@-moz-keyframes imagerotation {
    0% {
        -webkit-transform:rotate(0deg);
        -moz-transform:rotate(0deg);
        -o-transform:rotate(0deg);
        transform:rotate(0deg)
    }
    100% {
        -webkit-transform:rotate(360deg);
        -moz-transform:rotate(360deg);
        -o-transform:rotate(360deg);
        transform:rotate(360deg)
    }
}
@-webkit-keyframes imagerotation {
    0% {
        -webkit-transform:rotate(0deg);
        -moz-transform:rotate(0deg);
        -o-transform:rotate(0deg);
        transform:rotate(0deg)
    }
    100% {
        -webkit-transform:rotate(360deg);
        -moz-transform:rotate(360deg);
        -o-transform:rotate(360deg);
        transform:rotate(360deg)
    }
}

<div class="mt-scene-label mt-height1 mt-imagerotationeffect">&nbsp;
    <img src="https://lh6.googleusercontent.com/-NWADcETFzG8/USHBhdaT5ZI/AAAAAAAAB9s/N3BFW7gK5HI/s428-c-o-k/fan.png"
    alt="" />&nbsp;</div>