<div class="share_this">
    <a class="social_share vk" data-type="vk">ВКонтакте</a>
    <a  class="social_share fb" data-type="fb">Facebook</a>
    <a  class="social_share tw" data-type="tw">Twitter</a>
    <a  class="social_share ok" data-type="ok">Одноклассники</a>
    <a  class="social_share gg" data-type="gg">Google+</a>
    <a  class="social_share mr" data-type="mr">Mail.Ru</a>
    <a  class="social_share lj" data-type="lj">LiveJournal</a>
</div>

style="background: none;border: none;"

<ul class="social-buttons">
<li><a href="http://vk.com/" class="social-buttons__vk"><i class="fa fa-vk"></i></a></li>
<li><a href="http://ok.ru/" class="social-buttons__ok"><i class="fa fa-odnoklassniki"></i></a></li>
<li><a href="http://facebook.com/" class="social-buttons__fb"><i class="fa fa-facebook"></i></a></li>
<li><a href="http://twitter.com/" class="social-buttons__twitter"><i class="fa fa-twitter"></i></a></li>
<li><a href="https://plus.google.com/" class="social-buttons__google"><i class="fa fa-google-plus"></i></a></li>
</ul>

.social-buttons {
  margin-right: 40px;
}

.social-buttons li {
  display: inline-block;
  margin-right: 5px;
}

.social-buttons li:last-child {
  margin: 0;
}

.social-buttons a {
  border-radius: 50%;
  color: #fff;
  display: inline-block;
  height: 29px;
  line-height: 29px;
  text-align: center;
  width: 29px;
}

.social-buttons a:hover {
  background-color: #fff;
}

.social-buttons__vk {
  background-color: #45688e;
}

.social-buttons__vk:hover {
  color: #45688e !important;
}

.social-buttons__ok {
  background-color: #f2720c;
}

.social-buttons__ok:hover {
  color: #f2720c !important;
}

.social-buttons__fb {
  background-color: #3a5795;
}

.social-buttons__fb:hover {
  color: #3a5795 !important;
}

.social-buttons__twitter {
  background-color: #55acee;
}

.social-buttons__twitter:hover {
  color: #55acee !important;
}

.social-buttons__google {
  background-color: #d73d32;
}

.social-buttons__google:hover {
  color: #d73d32 !important;
}