源码
<nav role="navigation">
<div id="menuToggle">
<input type="checkbox" />
<span></span>
<span></span>
<span></span>
<ul id="menu">
<a href="#"><li>Home</li></a>
<a href="#"><li>About</li></a>
<a href="#"><li>Info</li></a>
<a href="#"><li>Contact</li></a>
<a href="https://erikterwan.com/" target="_blank"><li>Show me more</li></a>
</ul>
</div>
</nav>
<style>
body {
margin: 0;
padding: 0;
/* make it look decent enough */
background: #232323;
color: #cdcdcd;
font-family: "Avenir Next", "Avenir", sans-serif;
}
#menuToggle {
display: block;
position: relative;
top: 50px;
left: 50px;
z-index: 1;
-webkit-user-select: none;
user-select: none;
}
#menuToggle a {
text-decoration: none;
color: #232323;
transition: color 0.3s ease;
}
#menuToggle a:hover {
color: tomato;
}
#menuToggle input {
display: block;
width: 40px;
height: 32px;
position: absolute;
top: -7px;
left: -5px;
cursor: pointer;
opacity: 0;
/* hide this */
z-index: 2;
/* and place it over the hamburger */
-webkit-touch-callout: none;
}
/*
* Just a quick hamburger
*/
#menuToggle span {
display: block;
width: 33px;
height: 4px;
margin-bottom: 5px;
position: relative;
background: #cdcdcd;
border-radius: 3px;
z-index: 1;
transform-origin: 4px 0px;
transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1), background 0.5s cubic-bezier(0.77, 0.2, 0.05, 1), opacity 0.55s ease;
}
#menuToggle span:first-child {
transform-origin: 0% 0%;
}
#menuToggle span:nth-last-child(2) {
transform-origin: 0% 100%;
}
/*
* Transform all the slices of hamburger
* into a crossmark.
*/
#menuToggle input:checked ~ span {
opacity: 1;
transform: rotate(45deg) translate(-2px, -1px);
background: #232323;
}
/*
* But let's hide the middle one.
*/
#menuToggle input:checked ~ span:nth-last-child(3) {
opacity: 0;
transform: rotate(0deg) scale(0.2, 0.2);
}
/*
* Ohyeah and the last one should go the other direction
*/
#menuToggle input:checked ~ span:nth-last-child(2) {
transform: rotate(-45deg) translate(0, -1px);
}
/*
* Make this absolute positioned
* at the top left of the screen
*/
#menu {
position: absolute;
width: 300px;
margin: -100px 0 0 -50px;
padding: 50px;
padding-top: 125px;
background: #ededed;
list-style-type: none;
-webkit-font-smoothing: antialiased;
/* to stop flickering of text in safari */
transform-origin: 0% 0%;
transform: translate(-100%, 0);
transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1);
}
#menu li {
padding: 10px 0;
font-size: 22px;
}
#menuToggle input:checked ~ ul {
transform: none;
}
</style>