*{
	margin: 0;
	padding: 0;
	outline: none;
	box-sizing: border-box;
	font-family: "arial";
}

html{
	font-size: 62.5%;
}

body{
	font-size: 1.6rem;
	background-color: #000;
}

.container{
	width: 100vw;
	height: 100vh;
	background-color: #000;
	overflow: hidden;
}

	.cronometro{
		width: 70%;
		height: 40%;
		display: block;
		margin: auto;
		color: #fff;
		border: 4px dotted #888;
		border-radius: 50%;
		
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
	}
	
		.cronometro-tiempo{
			font-size: 5rem;
			font-weight: normal;
		}
		
			.cont-milliseconds{
				text-align: center;
			}.text-tiempo{
				font-size: 3rem;
				text-transform: uppercase;
			}
		
	.btn-group{
		width: 100%;
		padding: 2rem;
		text-align: center;
		transition: 500ms all ease;
	}
	
		button{
			position: relative;
			border-radius: 50%;
			padding: 2rem;			
			border: none;
			background-color: #1538ff;
			color: #fff;
			font-weight: bold;
			margin: 1rem;
			transition: 500ms all ease;
			cursor: pointer;
		}
		
		#btn{
			position: absolute;
			visibility: hidden;
		}#btn.visible{
			position: static;
			visibility: visible;
		}
		
		#btn span{
			display: block;
			width: 13px;
			height: 13px;
			border: 1px solid #fff;
			border-radius: 2px;
		}
		
		#btn-1 span{
			display: block;
			width: 13px;
			height: 13px;
			border: 1px solid #fff;
			background-color: #fff;
			border-radius: 50%;
		}
		
			#btn-1.pausa span{
				background-color: transparent;
			}
		
		button:hover{
			background-color: #0e26ab;
		}
		
	.btn, .btn-item, .btn-item-1{
		position: relative;
		display: block;
		width: 60%;
		margin: auto;
		background-color: #1538ff;
		border: none;
		padding: 1.6rem;
		border-radius: 0 0 0.6rem 0.6rem;
		font-size: 1.6rem;
		color: #fff;
		font-weight: bold;
		text-align: center;
		transition: 460ms all ease;
	}.btn-item, .btn-item-1{
		border-radius: 0;
		visibility: hidden;
		opacity: 0;
	}.btn-item.visible, .btn-item-1.visible{
		visibility: visible;
		opacity: 1;
		animation-name: menu;
		animation-duration: 500ms;
		animation-timing-function: linear;
		animation-iteration-count: 1;
		animation-delay: 0;
		animation-fill-mode: forwards;
	}
	
	.btn:hover, .btn-item:hover, .btn-item-1:hover{
		background-color: #0e26ab;
		cursor: pointer;
	}
	
.sub-temp{
	postion: absolute;
  top: 1rem; left: 0; bottom: 0; right: 0;
	display: block;
	width: 100%;
	padding: 1rem 0;
	visibility: hidden;
	opacity: 0;
	transition: 500ms all ease;
}.sub-temp.visible{
	visibility: visible;
	opacity: 1;
}

	.sub-temp > div{
		display: flex;
		flex-direction: row;
		flex-wrap: nowrap;
		justify-content: space-around;
	}
	
		.sub-temp > div > span{
			display: inline-block;
			padding: 0;
			font-size: 2.6rem;
			font-weight: bold;
			color: #fff;
		}
	
.temporizador{
	position: absolute;
	left: 0; right: 0; top: 3.6rem; bottom: 0;
	color: #fff;
	background-color: #000;
	width: 80%;
	height: 55vh;
	visibility: hidden;
	opacity: 0;
	margin: 30px auto;
	transition: 500ms all ease;
	
	display: flex;
	flex-direction: row;
	flex-wrap: no-wrap;
	justify-content: space-around;
}

	.temp-item{
		margin: 0.3rem;
		font-size: 2.6rem;
		padding: 1rem;
		font-weight: bold;
		max-height: 33rem;
		overflow: auto;
	}.temp-item::-webkit-scrollbar{
		width: 0.6rem;
		padding: 0.2rem;
	}.temp-item::-webkit-scrollbar-thumb{
		padding: 0.2rem;
		background-color: #ccc;
		border-radius: 30rem;
	}.temp-item::-webkit-scrollbar-thumb:hover{
		background-color: #888;
	}
	
		.temp-item > span{
			display: block;
			text-align: center;
			margin: 1.6rem 0;
			cursor: poiner;
			transform: scale(1.2);
			cursor: pointer;
		}.temp-item > span:hover{
			transform: scale(1.4);
			color: #1538ff;
		}
	
@keyframes menu{
	from{
		transform: translate(0, -100px) scale(0.1) rotate(360deg);
		border-radius: 50%;
	}
	to{
		transform: translate(0) scale(1) rotate(0);
		border-radius: 0;
	}
}

@media screen and (min-width: 1260px){
    .temporizador{height: 43vh;}
}

@media screen and (max-width: 80rem){
	.temporizador{
		height: 43vh;
	}
}
		
@media screen and (max-width: 60rem){
	.cronometro{
		width: 80%;
		height: 50%;
	}
}

@media screen and (max-width: 40rem){
	.temporizador{height: 55vh;}
}