.hamburger {
  padding: 15px 15px;
  display: inline-block;
  cursor: pointer;
  transition-property: opacity, filter;
  transition-duration: 0.15s;
  transition-timing-function: linear;
  font: inherit;
  color: inherit;
  text-transform: none;
  background-color: transparent;
  border: 0;
  margin: 0;
  outline: none !important;
  overflow: visible;
}
.hamburger-box {
  width: 40px;
  height: 24px;
  display: inline-block;
  position: relative;
}
.hamburger-inner {
  display: block;
  top: 50%;
  margin-top: -2px; 
}
.hamburger-inner, 
.hamburger-inner::before, 
.hamburger-inner::after {
  width: 40px;
  height: 4px;
  background-color: #e2211c;
  border-radius: 4px;
  position: absolute;
  transition-property: transform;
  transition-duration: 0.15s;
  transition-timing-function: ease; 
}
.is-active .hamburger-inner, 
.is-active .hamburger-inner::before, 
.is-active .hamburger-inner::after {
  background-color: #fff;
}
.hamburger-inner::before, 
.hamburger-inner::after {
  content: "";
  display: block; 
}
.hamburger-inner::before {
  top: -10px; 
}
.hamburger-inner::after {
  bottom: -10px; 
}

.hamburger--vortex .hamburger-inner {
  transition-duration: 0.2s;
  transition-timing-function: cubic-bezier(0.19, 1, 0.22, 1); 
}
.hamburger--vortex .hamburger-inner::before, 
.hamburger--vortex .hamburger-inner::after {
  transition-duration: 0s;
  transition-delay: 0.1s;
  transition-timing-function: linear; 
}
.hamburger--vortex .hamburger-inner::before {
  transition-property: top, opacity; 
}
.hamburger--vortex .hamburger-inner::after {
  transition-property: bottom, transform; 
}

.hamburger--vortex.is-active .hamburger-inner {
  transform: rotate(765deg);
  transition-timing-function: cubic-bezier(0.19, 1, 0.22, 1); 
}
.hamburger--vortex.is-active .hamburger-inner::before, 
.hamburger--vortex.is-active .hamburger-inner::after {
  transition-delay: 0s; 
}
.hamburger--vortex.is-active .hamburger-inner::before {
  top: 0;
  opacity: 0; 
}
.hamburger--vortex.is-active .hamburger-inner::after {
  bottom: 0;
  transform: rotate(90deg); 
}