alucho/static/css/hamburger.css

:root {
	--hamburger-size: 20px;
	--hamburger-padding: 10px;
	--hamburger-margin: 10px;
	--hamburger-bgcolor: rgba(0, 0, 0, .1);
}

/* Basic styles */

#mobile-header {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-align: start;
	-ms-flex-align: start;
	align-items: flex-start;
	-webkit-box-orient: horizontal;
	-webkit-box-direction: reverse;
	-ms-flex-direction: row-reverse;
	flex-direction: row-reverse;
	right: 0;
	position: relative;
	margin: var(--tile-margin) var(--tile-margin) 0 var(--tile-margin);
}

/* Toggle functionality */

#toggle {
	position: absolute;
	left: -100%;
	top: -100%;
}

#toggle:focus~.toggle-container .button-toggle, #toggle:checked~.toggle-container .button-toggle {
	-webkit-box-shadow: 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor);
	box-shadow: 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor);
}

#toggle:checked~.toggle-container .button-toggle:hover, #toggle:checked:focus~.toggle-container .button-toggle {
	-webkit-box-shadow: 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor);
	box-shadow: 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor);
}

#toggle:checked~.toggle-container .button-toggle::before {
	-webkit-transform: rotate(45deg) scale(1);
	transform: rotate(45deg) scale(1);
}

#toggle:checked~.toggle-container .button-toggle::after {
	-webkit-transform: rotate(-45deg) scale(1);
	transform: rotate(-45deg) scale(1);
}

#toggle:checked~.nav {
	margin-top: 0;
	margin-bottom: calc(var(--hamburger-size) + 2*var(--hamburger-padding) + 3*var(--hamburger-margin));
	width: 25%;
	pointer-events: auto;
	-webkit-transform: translate(calc(var(--hamburger-padding) + var(--hamburger-size)), calc(var(--hamburger-size) + 2*(var(--hamburger-padding) + var(--hamburger-margin))));
	transform: translate(calc(var(--hamburger-padding) + var(--hamburger-size)), calc(var(--hamburger-size) + 2*(var(--hamburger-padding) + var(--hamburger-margin))));
}

#toggle:checked~.nav .nav-item, #toggle:checked~.nav .nav-subitem {
	font-family: 'akrobat-regular';
	color: black;
	width: auto;
	height: 2.5em;
	line-height: 3em;
	text-align: right;
	margin: 0;
	opacity: 1;
	-webkit-transform: scaleY(1);
	transform: scaleY(1);
	-webkit-transition: .5s, opacity .1s;
	transition: .5s, opacity .1s;
}

#toggle:checked~.nav .nav-item:nth-child(1), #toggle:checked~.nav .nav-item:nth-child(1)::before {
	-webkit-transition-delay: .15s;
	transition-delay: .15s;
}

#toggle:checked~.nav .nav-subitem, #toggle:checked~.nav .nav-subitem::before {
	-webkit-transition-delay: .01s;
	transition-delay: .01s;
	right: 1em;
}

#toggle:checked~.nav .nav-item:nth-child(3), #toggle:checked~.nav .nav-item:nth-child(3)::before {
	-webkit-transition-delay: .05s;
	transition-delay: .05s;
}

#toggle:checked~.nav .nav-item:nth-child(4), #toggle:checked~.nav .nav-item:nth-child(4)::before {
	-webkit-transition-delay: 0s;
	transition-delay: 0s;
}

#toggle:checked~.nav .nav-item::before, #toggle:checked~.nav .nav-subitem::before {
	opacity: 0;
}

/* Toggle button */

.button-toggle {
	position: relative;
	display: inline-block;
	right: 0;
	width: var(--hamburger-size);
	height: var(--hamburger-size);
	margin: calc(var(--hamburger-margin) + var(--hamburger-padding)) var(--hamburger-padding);
	-webkit-box-shadow: 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor);
	box-shadow: 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor), inset 0 0 0 var(--hamburger-padding) var(--hamburger-bgcolor);
	border: none;
	cursor: pointer;
	border-radius: 100%;
	-webkit-transition: .6s;
	transition: .6s;
}

/* button X container (toggled) */

.button-toggle::before, .button-toggle::after {
	position: absolute;
	content: '';
	top: 50%;
	/* left: 0; */
	right: 0;
	width: 100%;
	height: 2px;
	background-color: black;
	border-radius: 5px;
	-webkit-transition: .5s;
	transition: .5s;
}

/* button \ container  */

.button-toggle::before {
	-webkit-transform: rotate(45deg) scale(0);
	transform: rotate(45deg) scale(0);
}

/* button / container  */

.button-toggle::after {
	-webkit-transform: rotate(-45deg) scale(0);
	transform: rotate(-45deg) scale(0);
}

/* Menu */

.nav {
	display: block;
	-webkit-transform: translateX(calc(var(--hamburger-size) + var(--hamburger-padding)));
	transform: translateX(calc(var(--hamburger-size) + var(--hamburger-padding)));
	margin: calc(var(--hamburger-margin) + var(--hamburger-padding)) 0;
	width: var(--hamburger-size);
	pointer-events: none;
	-webkit-transition: .5s;
	transition: .5s;
}

.nav .itemize {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-align: end;
	-ms-flex-align: end;
	align-items: flex-end;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-ms-flex-direction: column;
	flex-direction: column;
	padding: 0;
	margin: 0;
}

/* menu entries initial state */

.nav-item, .nav-subitem {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-orient: horizontal;
	-webkit-box-direction: reverse;
	-ms-flex-direction: row-reverse;
	flex-direction: row-reverse;
	-webkit-box-align: end;
	-ms-flex-align: end;
	align-items: flex-end;
	margin: 0;
	width: 100%;
	position: relative;
	clear: both;
	color: transparent;
	height: 7px;
	line-height: 7px;
	white-space: nowrap;
	-webkit-transform: scaleY(.2);
	transform: scaleY(.2);
	-webkit-transition: .5s, opacity .1s;
	transition: .5s, opacity .1s;
}

.nav-item:nth-child(1), .nav-item:nth-child(1)::before {
	-webkit-transition-delay: 0s;
	transition-delay: 0s;
}

.nav-subitem, .nav-subitem::before {
	opacity: 0;
	height: 0;
	-webkit-transition-delay: .05s;
	transition-delay: .05s;
}

.nav-item:nth-child(3), .nav-item:nth-child(3)::before {
	-webkit-transition-delay: .1s;
	transition-delay: .1s;
}

.nav-item:nth-child(4), .nav-item:nth-child(4)::before {
	-webkit-transition-delay: .15s;
	transition-delay: .15s;
}

.nav-item::before, .nav-subitem::before {
	position: absolute;
	content: '';
	top: 50%;
	width: 100%;
	border-radius: 5px;
	height: 2px;
	background-color: black;
	-webkit-transform: scaleY(5);
	transform: scaleY(5);
	-webkit-transition: .5s;
	transition: .5s;
}