nav.navy {
	position: fixed!important;
	bottom: 0px;
	left: 0;
	width: 100vw;
	height: 100px;
  z-index: 100;
}
nav .panel {
	height: 60px;
	width: calc(50% - 60px);
	position: absolute;
	top: 20px;
	background-color: rgba(53, 53, 53, 0);
	transition: width .3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
nav .panel:after {
	content: '';
	position: absolute;
	display: block;
	height: 0;
	width: 0;
	border-left: 35px solid transparent;
  border-right: 35px solid transparent;
  border-top: 60px solid rgb(53, 53, 53);
	top: 0;
}
nav .panel.panel-left {
  margin: unset;
	left: 0;
}
nav .panel.panel-left:after {
	right: -35px;
}
nav .panel.panel-right {
  margin: unset;
	right: 0;
}
nav .panel.panel-right:after {
	left: -35px;
}

nav #menu_btn {
	background: none;
	border: 0;
	position: absolute;
	top: 0;
	left: calc(50% - 50px);
	height: 100px;
	width: 100px;
	z-index: 10;
	cursor: pointer;
	overflow: hidden;
	padding: 0;
	transition: transform .3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
nav #menu_btn:after {
	content: '';
	position: absolute;
	display: block;
	height: 0;
	width: 0;
	border-left: 50px solid transparent;
	border-right: 50px solid transparent;
	border-bottom: 86.60254px solid rgb(163, 163, 163);
	top: 6px;
	left: 0;
}

nav #menu {
	position: absolute;
	bottom: calc(100% + 50px);
	left: calc(50% - 75px);
	background-color: rgba(77, 77, 77, 0.637);/* fond semi-transparent noir */
	backdrop-filter: blur(10px);          /* flou */
	-webkit-backdrop-filter: blur(10px);  /* pour Safari */
	width: 150px;
	box-sizing: border-box;
	padding: 10px 0;
	transition: transform .3s cubic-bezier(0.175, 0.885, 0.32, 1.275), visibility .1s, opacity .1s;
	transform: translateY(20px) scale(.8);
	visibility: hidden;
	opacity: 0;
	transition-delay: .1s;
}
nav #menu:after {
	content: '';
	position: absolute;
	display: block;
	height: 0;
	width: 0;
	border-left: 75px solid transparent;
	border-right: 75px solid transparent;
	border-top: 30px solid rgba(77, 77, 77, 0.637) ;/* fond semi-transparent noir */
	backdrop-filter: blur(10px);          /* flou */
	-webkit-backdrop-filter: blur(10px);  /* pour Safari */
	top: 100%;
	left: 0;
}
nav #menu a {
	display: block;
	color: var(--text-color);
	text-decoration: none;
	font-size: 12px;
	padding: 12px 22px;
	user-select: none;
	transition: background-color .1s;
}
nav #menu a:hover {
	background-color: rgba(255,255,255,.2);
}

nav #menu_btn:hover {
	transform: scale(1.3);
}
nav #menu_btn:hover ~ .panel {
	width: calc(50% - 70px);
}

nav #menu_btn:focus {
	transition: height .2s, transform 0s linear .2s;
	height: 0;
	outline: none;
	transform: scale(.6);
}
nav #menu_btn:focus ~ .panel {
	transition-delay: .2s;
	width: 50%;
}
nav #menu_btn:focus ~ #menu {
	transform: translateY(0);
	visibility: visible;
	opacity: 1;
	transition-delay: 0s;
}

nav #menu_btn.loading {
	transform-origin: center 63%;
	animation-name: loading;
	animation-duration: .6s;
	animation-iteration-count: infinite;
}

@keyframes loading {
	0% {
		transform: scale(1) rotate(0deg);
	}
	45% {
	  transform: scale(.5) rotate(60deg);
	}
	45.0000001% {
	  transform: scale(.5) rotate(-60deg);
	}
	90% {
		transform: scale(1) rotate(0deg);
	}
	100% {
		transform: scale(1) rotate(0deg);
	}
}