.sns-share-component a {
  position:relative;
  text-decoration:none;
}

.sns-share-component .icon{
    font-size: 20px;
    background: #555;
    border-radius: 50%;
    margin: 10px 0;
    padding: 4px;
    color:#fff;
    -webkit-transition: background 0.2s ease-out 0s;
    -moz-transition: background 0.2s ease-out 0s;
    transition: background 0.2s ease-out 0s;

}

.sns-share-component .icon:hover{
  font-size: 20px;
  background: #666;
}