---
title: Hamburger Button
tags: interactivity,beginner
---

Displays a hamburger menu which transitions to a cross on hover.

- Use a `.hamburger-menu` container `div` which contains the top, bottom, and middle bars.
- The container is set to be a flex container (`display: flex`) with `flex-direction` to be `column` and `flex-wrap` to be `wrap` (alternatively, you can set both properties by a shorthand `flex-flow: column wrap`).
- Add distance between the bars using `justify-content: space-between`.
- The animation has 3 parts: top and bottom bars transforming to 45 degree angles (`rotate(45deg)`), and the middle bar fading away by setting `opacity: 0`.
- The `transform-origin` is set to `left` so the bars rotate around the left point.
- Set `transition all 0.5s` so that both `transform` and `opacity` properties are animated for half a second.

```html
<div class="hamburger-menu">
  <div class="bar top"></div>
  <div class="bar middle"></div>
  <div class="bar bottom"></div>
</div>
```

```css
.hamburger-menu {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  justify-content: space-between;
  height: 2.5rem;
  width: 2.5rem;
  cursor: pointer;
}

.hamburger-menu .bar {
  height: 5px;
  background: black;
  border-radius: 5px;
  margin: 3px 0px;
  transform-origin: left;
  transition: all 0.5s;
}

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

.hamburger-menu:hover .middle {
  opacity: 0;
}

.hamburger-menu:hover .bottom {
  transform: rotate(-45deg);
}
```