.social-buttons {
  padding: 100px;
  text-align: center;
  background: #ecf0f1;
}

.social-button {
  display: inline-block;
  background-color: #fff;
  width: 50px;
  height: 50px;
  line-height: 50px;
  margin: 0 10px;
  margin-top: 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
  opacity: .99;
  border-radius: 50%;
  box-shadow: 0 0 30px 0 rgba(0, 0, 0, 0.05);
  -webkit-transition: all 0.35s cubic-bezier(0.31, -0.105, 0.43, 1.59);
  transition: all 0.35s cubic-bezier(0.31, -0.105, 0.43, 1.59);
}
.social-button:before {
  content: '';
  background-color: #000;
  width: 120%;
  height: 120%;
  position: absolute;
  top: 90%;
  left: -110%;
  -webkit-transform: rotate(45deg);
          transform: rotate(45deg);
  -webkit-transition: all 0.35s cubic-bezier(0.31, -0.105, 0.43, 1.59);
  transition: all 0.35s cubic-bezier(0.31, -0.105, 0.43, 1.59);
}
.social-button .fa {
  font-size: 18px;
  vertical-align: middle;
  -webkit-transform: scale(0.8);
          transform: scale(0.8);
  -webkit-transition: all 0.35s cubic-bezier(0.31, -0.105, 0.43, 1.59);
  transition: all 0.35s cubic-bezier(0.31, -0.105, 0.43, 1.59);
}
.social-button.facebook:before {
  background-color: #3B5998;
}
.social-button.facebook .fa {
  color: #3B5998;
}
.social-button.twitter:before {
  background-color: #3CF;
}
.social-button.twitter .fa {
  color: #3CF;
}
.social-button.google:before {
  background-color: #DC4A38;
}
.social-button.google .fa {
  color: #DC4A38;
}
.social-button.dribbble:before {
  background-color: #F26798;
}
.social-button.dribbble .fa {
  color: #F26798;
}
.social-button.skype:before {
  background-color: #00AFF0;
}
.social-button.skype .fa {
  color: #00AFF0;
}
.social-button.linkedin:before {
  background-color: #00a0dc;
}
.social-button.linkedin .fa {
  color: #00a0dc;
}
.social-button.instagram:before {
  background-color: #c13584;
}
.social-button.instagram .fa {
  color: #c13584;
}
.social-button.youtube:before {
  background-color: #cd201f;
}
.social-button.youtube .fa {
  color: #cd201f;
}
.social-button.behance:before {
  background-color: #1769ff;
}
.social-button.behance .fa {
  color: #1769ff;
}
.social-button.github:before {
  background-color: #6cc644;
}
.social-button.github .fa {
  color: #6cc644;
}
.social-button:focus:before, .social-button:hover:before {
  top: -10%;
  left: -10%;
}
.social-button:focus .fa, .social-button:hover .fa {
  color: #fff;
  -webkit-transform: scale(1);
          transform: scale(1);
}