CSS Animation Hamburger To X Example

<!doctype html>
<title>Example</title>
<style>
body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: sans-serif;
    background-color: #f0f0f0;
}

.hamburger-btn {
    width: 40px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0;
}

.hamburger-line {
    width: 100%;
    height: 4px;
    background-color: #333;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Open State */
.hamburger-btn.open .hamburger-line:nth-child(1) {
    transform: translateY(13px) rotate(45deg);
}

.hamburger-btn.open .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.open .hamburger-line:nth-child(3) {
    transform: translateY(-13px) rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
    .hamburger-line {
        transition: none;
    }
}
</style>