.push-extend-nav {
  position: fixed;
  z-index: 99999;
  top: 48%;
  right: 45px;
}
.push-extend-nav .extend-nav-bg {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  bottom: auto;
  right: auto;
  width: 60px;
  height: 60px;
  border-radius: 30px;
  background: rgba(79, 83, 103, 1);
}
.push-extend-nav.nav-is-visible .extend-nav-bg {
  height: 100%;
}
.push-extend-nav ul {
  position: relative;
  z-index: 2;
  padding: 55px 0 30px 0;
  visibility: hidden;
  -webkit-transition: visibility 0.3s;
  -moz-transition: visibility 0.3s;
  transition: visibility 0.3s;
}
.push-extend-nav ul a {
  position: relative;
  display: block;
  height: 40px;
  line-height: 40px;
  color: rgba(255, 255, 255, 1);
  font-size: 18px;
  -webkit-transition: color 0.2s;
  -moz-transition: color 0.2s;
  transition: color 0.2s;
}
.push-extend-nav ul span {
  display: block;
  opacity: 0;
  -webkit-transform: translateX(-15px);
  -moz-transform: translateX(-15px);
  -ms-transform: translateX(-15px);
  -o-transform: translateX(-15px);
  transform: translateX(-15px);
}
.push-extend-nav ul span i {
  padding-left:25px;
}
.push-nav-trigger {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  bottom: auto;
  right: auto;
  height: 60px;
  width: 60px;
  border-radius: 50%;
  overflow: hidden;
  white-space: nowrap;
  color: transparent;
}
.push-nav-trigger span, .push-nav-trigger span::after, .push-nav-trigger span::before {
  position: absolute;
  width: 16px;
  height: 2px;
  background-color: #ffffff;
}
.push-nav-trigger span {
  left: 50%;
  top: 50%;
  bottom: auto;
  right: auto;
  -webkit-transform: translateX(-50%) translateY(-50%);
  -moz-transform: translateX(-50%) translateY(-50%);
  -ms-transform: translateX(-50%) translateY(-50%);
  -o-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
  -webkit-transition: background-color 0.2s;
  -moz-transition: background-color 0.2s;
  transition: background-color 0.2s;
}
.push-nav-trigger span::after, .push-nav-trigger span::before {
  content: '';
  top: 0;
  left: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transition: -webkit-transform 0.2s;
  -moz-transition: -moz-transform 0.2s;
  transition: transform 0.2s;
}
.push-nav-trigger span::before {
  -webkit-transform: translateY(-6px);
  -moz-transform: translateY(-6px);
  -ms-transform: translateY(-6px);
  -o-transform: translateY(-6px);
  transform: translateY(-6px);
}
.push-nav-trigger span::after {
  -webkit-transform: translateY(6px);
  -moz-transform: translateY(6px);
  -ms-transform: translateY(6px);
  -o-transform: translateY(6px);
  transform: translateY(6px);
}
.nav-is-visible .push-nav-trigger span {
  background-color: transparent;
}
.nav-is-visible .push-nav-trigger span::before {
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  -o-transform: rotate(-45deg);
  transform: rotate(-45deg);
}
.nav-is-visible .push-nav-trigger span::after {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
}
.push-extend-nav.nav-is-visible ul {
  visibility: visible;
}
.push-extend-nav.nav-is-visible ul span {
  opacity: 1;
  -webkit-transform: translateX(0);
  -moz-transform: translateX(0);
  -ms-transform: translateX(0);
  -o-transform: translateX(0);
  transform: translateX(0);
  -webkit-animation: slideIn 0.15s backwards;
  -moz-animation: slideIn 0.15s backwards;
  animation: slideIn 0.15s backwards;
  -webkit-transition: -webkit-transform 0.2s;
  -moz-transition: -moz-transform 0.2s;
  transition: transform 0.2s;
}