Pure CSS Animating Mobile menu activated using radiobutton - html

Question

I have a Mobile menu that should be forming X when clicked, however it would not respond and is stuck on its shape. I don't know why it acted that why, but as far as I have analyzed, this code should animate the Menu to form X when clicked. I am attaching the code for reference.
These are the CSS and HTML
/* Checkbox Hack */
input[type=checkbox] {
display: block;
width: 40px;
height: 32px;
position: absolute;
top: -7px;
left: -5px;
cursor: pointer;
opacity: 0;
z-index: 2;
-webkit-touch-callout: none;
}
/* Default State */
.divko {
background: green;
width: 400px;
height: 100px;
line-height: 100px;
color: white;
text-align: center;
}
/* Toggled State */
.myspan {
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, 1.0), background 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0), opacity 0.55s ease;
}
.myspan:first-child {
transform-origin: 0% 0%;
}
.myspan:nth-last-child(2) {
transform-origin: 0% 100%;
}
input[type=checkbox]:checked ~ .myspan {
opacity: 1;
transform: rotate(45deg) translate(-2px, -1px);
background: #232323;
}
input[type=checkbox]:checked ~ .divko {
background: red;
}
<div for="toggle-1"> <span class="myspan"></span>
<span class="myspan"></span>
<span class="myspan"></span></div>
<input type="checkbox" id="toggle-1">
<div class="divko">I'm controlled by toggle. No JavaScript!</div>
Here is the dabblet
http://dabblet.com/gist/5b4667ecc7255c228cd488c080140d95

Answer 1

Put the checkbox before the div I've give the .menu class to, and apply the rule on input[type=checkbox]:checked ~ .menu > .myspan.
/* Checkbox Hack */
input[type=checkbox] {
display: block;
width: 40px;
height: 32px;
position: absolute;
top: -7px;
left: -5px;
cursor: pointer;
opacity: 0;
z-index: 2;
-webkit-touch-callout: none;
}
/* Default State */
.divko {
background: green;
width: 400px;
height: 100px;
line-height: 100px;
color: white;
text-align: center;
}
/* Toggled State */
.myspan {
display: block;
width: 33px;
height: 4px;
margin-bottom: 5px;
position: relative;
background: #cdcdcd;
border-radius: 3px;
z-index: 1;
transform-origin: 4px 2px;
transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0), background 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0), opacity 0.55s ease;
}
input[type=checkbox]:checked ~ .menu > .myspan {
opacity: 1;
background: #232323;
}
input[type=checkbox]:checked ~ .menu > .myspan:first-child {
transform: rotate(45deg);
}
input[type=checkbox]:checked ~ .menu > .myspan:nth-child(2) {
transform: translate(-100px);
}
input[type=checkbox]:checked ~ .menu > .myspan:last-child {
transform: rotate(-45deg);
}
input[type=checkbox]:checked ~ .divko {
background: red;
}
<input type="checkbox" id="toggle-1">
<div for="toggle-1" class="menu">
<span class="myspan"></span>
<span class="myspan"></span>
<span class="myspan"></span>
</div>
<div class="divko">I'm controlled by toggle. No JavaScript!</div>