HTMLify

* {
    -webkit-tap-highlight-color: transparent;
}

*:focus {
    outline: none;
}

body {
    display: grid;
    place-items: center;
    height: 100vh;
    background: #121314;
    margin: 0;
    padding: 0;
}

#hamburger {
    width: 39px;
    overflow: hidden;
    transform: translateY(-50%) scale(2);
}

#menu_checkbox {
    display: none;
}

#menu_label {
    position: relative;
    display: block;
    height: 29px;
    cursor: pointer;
}

#menu_label::before,
#menu_label::after,
#menu_text_bar {
    position: absolute;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: #fff;
}

#menu_label::before,
#menu_label::after {
    content: "";
    transition: 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55) left;
}

#menu_label::before {
    top: 0;
}

#menu_label::after {
    top: 12px;
}

#menu_text_bar {
    top: 24px;
}

#menu_text_bar::before {
    content: "MENU";
    position: absolute;
    top: 5px;
    right: 0;
    left: 0;
    color: #fff;
    font-size: 12px;
    font-weight: bold;
    font-family: "Montserrat", Arial, Helvetica, sans-serif;
    text-align: center;
}

#menu_checkbox:checked+#menu_label::before {
    left: -39px;
}

#menu_checkbox:checked+#menu_label::after {
    left: 39px;
}

#menu_checkbox:checked+#menu_label #menu_text_bar::before {
    animation: moveUpThenDown 0.8s ease 0.2s forwards,
        shakeWhileMovingUp 0.8s ease 0.2s forwards,
        shakeWhileMovingDown 0.2s ease 0.8s forwards;
}

@keyframes moveUpThenDown {
    0% {
        top: 0;
    }

    50% {
        top: -27px;
    }

    100% {
        top: -14px;
    }
}

@keyframes shakeWhileMovingUp {
    0% {
        transform: rotateZ(0);
    }

    25% {
        transform: rotateZ(-10deg);
    }

    50% {
        transform: rotateZ(0deg);
    }

    75% {
        transform: rotateZ(10deg);
    }

    100% {
        transform: rotateZ(0);
    }
}

@keyframes shakeWhileMovingDown {
    0% {
        transform: rotateZ(0);
    }

    80% {
        transform: rotateZ(3deg);
    }

    90% {
        transform: rotateZ(-3deg);
    }

    100% {
        transform: rotateZ(0);
    }
}