.hamburger {
    display: inline-block;
    cursor: pointer;
    transition-property: opacity, filter;
    transition-duration: .15s;
    transition-timing-function: linear;
    font: inherit;
    color: inherit;
    text-transform: none;
    background-color: transparent;
    border: 0;
    margin: 0;
    overflow: visible
}

a:hover .hamburger {
    opacity: .7
}

.hamburger-box {
    width: 20px;
    height: 16px;
    display: inline-block;
    position: relative
}

.hamburger-inner {
    display: block;
    top: 50%;
    margin-top: 2px
}

.hamburger-inner,
.hamburger-inner::after,
.hamburger-inner::before {
    width: 20px;
    height: 2px;
    background-color: #000;
    border-radius: 3px;
    position: absolute;
    transition-property: transform;
    transition-duration: .15s;
    transition-timing-function: ease
}

.hamburger-inner::after,
.hamburger-inner::before {
    content: "";
    display: block
}

.hamburger-inner::before {
    top: -7px
}

.hamburger-inner::after {
    bottom: -7px
}

.hamburger--vortex-r .hamburger-inner {
    -webkit-transition-duration: 0.2s;
    transition-duration: 0.2s;
    -webkit-transition-timing-function: cubic-bezier(.19, 1, .22, 1);
    transition-timing-function: cubic-bezier(.19, 1, .22, 1)
}

.hamburger--vortex-r .hamburger-inner::before,
.hamburger--vortex-r .hamburger-inner::after {
    -webkit-transition-duration: 0s;
    transition-duration: 0s;
    -webkit-transition-delay: 0.1s;
    transition-delay: 0.1s;
    -webkit-transition-timing-function: linear;
    transition-timing-function: linear
}

.hamburger--vortex-r .hamburger-inner::before {
    -webkit-transition-property: top, opacity;
    transition-property: top, opacity
}

.hamburger--vortex-r .hamburger-inner::after {
    -webkit-transition-property: bottom, -webkit-transform;
    transition-property: bottom, transform
}

.hamburger--vortex-r.is-active .hamburger-inner {
    -webkit-transform: rotate(-765deg);
    -ms-transform: rotate(-765deg);
    transform: rotate(-765deg);
    -webkit-transition-timing-function: cubic-bezier(.19, 1, .22, 1);
    transition-timing-function: cubic-bezier(.19, 1, .22, 1)
}

.hamburger--vortex-r.is-active .hamburger-inner::before,
.hamburger--vortex-r.is-active .hamburger-inner::after {
    -webkit-transition-delay: 0s;
    transition-delay: 0s
}

.hamburger--vortex-r.is-active .hamburger-inner::before {
    top: 0;
    opacity: 0
}

.hamburger--vortex-r.is-active .hamburger-inner::after {
    bottom: 0;
    -webkit-transform: rotate(-90deg);
    -ms-transform: rotate(-90deg);
    transform: rotate(-90deg)
}