.menu-btn {
    position: relative;
    display: block;
    height: 48px;
    white-space: nowrap;
    overflow: hidden;
    cursor: pointer;
    -webkit-tap-highlight-color: rgba(0,0,0,0);
}
.menu-btn-icon {
    left: 50% !important;
    margin-top: -1px;
    margin-left: -12.5px;
}
.menu-btn-icon, .menu-btn-icon:before, .menu-btn-icon:after {
    position: absolute;
    top: 50%;
    left: 2px;
    height: 2px;
    width: 24px;
    background: #fff;
    transition: all 0.25s;
}
.menu-btn-icon:before {
    content: '';
    top: -7px;
    left: 0;
}
.menu-btn-icon:after {
    content: '';
    top: 7px;
    left: 0;
}
#menu-state:checked ~ .menu-btn .menu-btn-icon {
    height: 0;
    background: transparent;
}
#menu-state:checked ~ .menu-btn .menu-btn-icon:before {
    top: 0;
    -webkit-transform: rotate(-45deg);
        -ms-transform: rotate(-45deg);
            transform: rotate(-45deg);
}
#menu-state:checked ~ .menu-btn .menu-btn-icon:after {
    top: 0;
    -webkit-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
            transform: rotate(45deg);
}
#menu-state {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    border: 0;
    padding: 0;
    overflow: hidden;
    clip: rect(1px,1px,1px,1px);
}
#menu-state:not(:checked) ~ #menu.top {
    display: none;
}
#menu-state:checked ~ #menu.top {
    display: block;
}
@media (min-width: 768px) {
    .menu-btn {
        position: absolute;
        top: -99999px;
    }
    #menu-state:not(:checked) ~ #menu.top {
        display: block;
    }
}