.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;
  overflow: visible;
}
.hamburger:hover {
  opacity: 0.7;
}
.hamburger.is-active:hover {
  opacity: 0.7;
}
.hamburger.is-active .hamburger-inner,
.hamburger.is-active .hamburger-inner::before,
.hamburger.is-active .hamburger-inner::after {
  background-color: #fff;
}

.hamburger-box {
  width: 32px;
  height: 20px;
  display: inline-block;
  position: relative;
}

.hamburger-inner {
  display: block;
  top: 50%;
  margin-top: -2px;
}
.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
  width: 32px;
  height: 2px;
  background-color: #fff;
  border-radius: 0;
  position: absolute;
  transition-property: transform;
  transition-duration: 0.15s;
  transition-timing-function: ease;
}
.hamburger-inner::before,
.hamburger-inner::after {
  content: "";
  display: block;
}
.hamburger-inner::before {
  top: -8px;
}
.hamburger-inner::after {
  bottom: -8px;
}

/*
   * Minus
   */
.hamburger--minus .hamburger-inner::before,
.hamburger--minus .hamburger-inner::after {
  transition: bottom 0.08s 0s ease-out, top 0.08s 0s ease-out, opacity 0s linear;
}

.hamburger--minus.is-active .hamburger-inner::before,
.hamburger--minus.is-active .hamburger-inner::after {
  opacity: 0;
  transition: bottom 0.08s ease-out, top 0.08s ease-out, opacity 0s 0.08s linear;
}

.hamburger--minus.is-active .hamburger-inner::before {
  top: 0;
}

.hamburger--minus.is-active .hamburger-inner::after {
  bottom: 0;
}

@media only screen and (max-width: 767px) {
  .hamburger:hover {
    opacity: 1;
  }
  .hamburger.is-active:hover {
    opacity: 1;
  }
}