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From 2014.igem.org

1. social_media {

       float: right;

}

1. social_media li:hover {

       box-shadow: 5px 5px 2px #888888;

}

1. social_media li {

       display: inline-block;
       padding-left: 10px;

}

.sm_logo {

       height: 30px;

}