<style>
.strava-badge- { display: inline-block; height: 48px; }
.strava-badge- img { visibility: hidden; height: 48px; }
.strava-badge-:hover { background-position: 0 -63px; }
.strava-badge-follow { height: 48px; width: 48px; background: url(//badges.strava.com/echelon-sprite-48.png) no-repeat 0 0; }
</style>
<A href="http://strava.com/athletes/66569991/badge" class="strava-badge- strava-badge-follow" target="_blank"><img src="//badges.strava.com/echelon-sprite-48.png" alt="Strava" /></a>