/* thanks to https://codepen.io/designcouch/pen/ExvwPY for being much smarter than I am */
#mobile-menu-icon {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    cursor: pointer;
    width: 2rem;
    height: 1.2rem;
}

#mobile-menu-icon span {
    display: block;
    position: absolute;
    height: 0.2rem;
    width: 90%;
    background: #ffffff;
    border-radius: 0.2rem;
    opacity: 1;
    left: 0;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .25s ease-in-out;
    -moz-transition: .25s ease-in-out;
    -o-transition: .25s ease-in-out;
    transition: .25s ease-in-out;
}



#mobile-menu-icon span:nth-child(1) {
    top: 0;
}

#mobile-menu-icon span:nth-child(2),#mobile-menu-icon span:nth-child(3) {
    top: .5rem;
}

#mobile-menu-icon span:nth-child(4) {
    top: 1rem;
}

#mobile-menu-icon.open span:nth-child(1) {
    top: .5rem;
    width: 0%;
    left: 50%;
}

#mobile-menu-icon.open span:nth-child(2) {
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
}

#mobile-menu-icon.open span:nth-child(3) {
    -webkit-transform: rotate(-45deg);
    -moz-transform: rotate(-45deg);
    -o-transform: rotate(-45deg);
    transform: rotate(-45deg);
}

#mobile-menu-icon.open span:nth-child(4) {
    top: .5rem;
    width: 0%;
    left: 50%;
}