.hamburger {
    position: fixed;
    top: 20px;
    left: 20px;
    margin-left: 0;
    width: 50px;
    height: 50px;
    display: flex;
    z-index: 1000;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    flex-wrap: wrap;
    cursor: pointer;
    display: none;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    transition: .5s ease-in-out;
}

.hamburger.active {
    margin-left: 200px;
}

.hamburger .bar1,
.hamburger .bar2,
.hamburger .bar3 {
    position: absolute;
    width: 30px;
    height: 6px;
    border-radius: 200px;
    background: white;
    transition: 0.5s ease-in-out;
}

.hamburger:hover .bar1,
.hamburger:hover .bar2,
.hamburger:hover .bar3 {
    width: 40px;
}

.hamburger .bar1 {
    transform: translate(0, -15px);
    animation: no_bar1 0.75s linear 0s 1 forwards;
}

.hamburger .bar3 {
    transform: translate(0, 15px);
    animation: no_bar3 0.75s linear 0s 1 forwards;
}

.hamburger .bar3::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    border-radius: 10px;
    background: white;
    height: 6px;
    transition: 0.5s ease-in-out;
}

.hamburger:hover .bar3::after {
    width: 40px;
}



@keyframes no_bar1 {
    0% {
        transform: rotate(45deg);
    }

    33.33% {
        transform: translate(0, 0);
    }

    66.66% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(0, -15px);
    }
}

@keyframes no_bar3 {
    0% {
        transform: rotate(-45deg);
    }

    33.33% {
        transform: translate(0, 0);
    }

    66.66% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(0, 15px);
    }
}

.hamburger.active .bar1 {
    animation: bar1 0.75s linear 0s 1 forwards;
    animation: name duration timing-function delay iteration-count direction
        fill-mode;
}

@keyframes bar1 {
    0% {
        transform: translate(0, -15px);
    }

    33.33% {
        transform: translate(0, 0);
    }

    66.66% {
        transform: translate(0, 0);
    }

    100% {
        transform: rotate(45deg);
    }
}

.hamburger.active .bar3 {
    animation: bar3 0.75s linear 0s 1 forwards;
}

@keyframes bar3 {
    0% {
        transform: translate(0, 15px);
    }

    33.33% {
        transform: translate(0, 0);
    }

    66.66% {
        transform: translate(0, 0);
        height: 16px;
        background: transparent;
    }

    100% {
        transform: rotate(-45deg);
        height: 16px;
        background: transparent;
    }
}

.hamburger.active .bar2 {
    width: 0;
}