#share42 {display: inline-block; padding: 6px 0 0 6px; background: #FFF; border: 1px solid #E9E9E9; border-radius: 4px;}
#share42:hover {background: #F6F6F6; border: 1px solid #D4D4D4; box-shadow: 0 0 5px #DDD;}
#share42 a {opacity: 0.5}
#share42:hover a {opacity: 0.7}
#share42 a:hover {opacity: 1}

#share42 a {position:relative;}
#share42 a span {display: none; position: absolute; z-index: 10; top: 0; left: 100%; height: 19px; margin-left: 5px; padding: 0 5px; background: #FFF; border-radius: 4px; border: 1px solid #AAA; box-shadow: 0 0 5px rgba(0,0,0,0.25); text-align: center; color: #666; font: 12px/20px Arial, sans-serif;}
#share42 a:hover span {display: block}
#share42 a span:before {content: ''; position: absolute; top: 50%; left: -5px; margin-top: -3px; width: 5px; height: 7px; background: url(data:image/gif;base64,R0lGODlhBQAHAJEDAKqqqsnJyf///////yH5BAEAAAMALAAAAAAFAAcAAAIMnBEXMijiXlts1lkAADs=) no-repeat;}