:root {
    --hamburger-size: 60px;
    --top: auto;
    --right: auto;
}

body {
    margin: 0;
    background: #000;
    height: 100vh;
    display: grid;
    place-items: center;
}

.container {
    position: absolute;
    top: var(--top);
    right: var(--right);
}

.hamburger {
    width: var(--hamburger-size);
    height: var(--hamburger-size);
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    display: flex;
}

.hamburger span {
    width: 70%;
    height: 4px;
    background: #fff;
    border-radius: 2px;
    position: absolute;
    transition: all 0.3s ease;
}

.hamburger-top {
    transform: translateY(-10px);
}

.hamburger-middle {
    transform: translateY(0);
}

.hamburger-bottom {
    transform: translateY(10px);
}

.hamburger.open .hamburger-top {
    transform: rotate(45deg);
}

.hamburger.open .hamburger-middle {
    opacity: 0;
}

.hamburger.open .hamburger-bottom {
    transform: rotate(-45deg);
}