.btn-sso {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 4px;
  width: 120%;
  height: 36px;
  background-color: #ff4d4f;
  border-radius: 4px;
  font-family: Poppins-Medium;
  font-size: 16px;
  color: #fff !important;
  line-height: 1.2;

  -webkit-transition: all 0.4s;
  -o-transition: all 0.4s;
  -moz-transition: all 0.4s;
  transition: all 0.4s;
  position: relative;
  z-index: 1;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  padding-top: 8px;
}

.btn-sso::before {
  content: "";
  display: block;
  position: absolute;
  z-index: -1;
  width: 100%;
  height: 100%;
  border-radius: 4px;
  top: 0;
  left: 0;
  border-color: transparent !important;
  background: -webkit-linear-gradient(45deg, #00dbde, #fc00ff);
  background: -o-linear-gradient(45deg, #00dbde, #fc00ff);
  background: -moz-linear-gradient(45deg, #00dbde, #fc00ff);
  background: linear-gradient(45deg, #00dbde, #fc00ff);
  opacity: 0;
  -webkit-transition: all 0.4s;
  -o-transition: all 0.4s;
  -moz-transition: all 0.4s;
  transition: all 0.4s;
  color: #fff;
}

.btn-sso:hover:before {
  opacity: 1;
  color: #fff;
}