body {
	background-color: #424242;
	font-family: Tahoma;
}

.container {
	display: flex;
	align-items: center;
	justify-content: center;
	height: 100vh;
	width: 100vw;
}

#container {
	width: 200px;
	padding: 8px 8px 20px 8px;
	margin: 20px auto;
	background-color: #ABABAB;
	border-radius: 4px;
	border-top: 2px solid #FFF;
	border-right: 2px solid #FFF;
	border-bottom: 2px solid #C1C1C1;
	border-left: 2px solid #C1C1C1;
	box-shadow: -3px 3px 7px rgba(0, 0, 0, .6), inset -100px 0px 100px rgba(255, 255, 255, .5);
}

#display {
	display: block;
	margin: 15px auto;
	height: 42px;
	width: 174px;
	padding: 0 10px;
	border-radius: 4px;
	border-top: 2px solid #C1C1C1;
	border-right: 2px solid #C1C1C1;
	border-bottom: 2px solid #FFF;
	border-left: 2px solid #FFF;
	background-color: #FFF;
	box-shadow: inset 0px 0px 10px #030303, inset 0px -20px 1px rgba(150, 150, 150, .2);
	font-size: 28px;
	color: #666;
	text-align: right;
	font-weight: 400;
}

.button {
	display: inline-block;
	margin: 2px;
	width: 42px;
	height: 42px;
	font-size: 16px;
	font-weight: bold;
	border-radius: 4px;
}

.mathButtons {
	margin: 2px 2px 6px 2px;
	color: #FFF;
	text-shadow: -1px -1px 0px #44006F;
	background-color: #434343;
	border-top: 2px solid #C1C1C1;
	border-right: 2px solid #C1C1C1;
	border-bottom: 2px solid #181818;
	border-left: 2px solid #181818;
	box-shadow: 0px 0px 2px #030303, inset 0px -20px 1px #2E2E2E;
}

.digits {
	color: #181818;
	text-shadow: 1px 1px 0px #FFF;
	background-color: #EBEBEB;
	border-top: 2px solid #FFF;
	border-right: 2px solid #FFF;
	border-bottom: 2px solid #C1C1C1;
	border-left: 2px solid #C1C1C1;
	border-radius: 4px;
	box-shadow: 0px 0px 2px #030303, inset 0px -20px 1px #DCDCDC;
}

.digits:hover,
.mathButtons:hover,
#clearButton:hover {
	background-color: #FFBA75;
	box-shadow: 0px 0px 2px #FFBA75, inset 0px -20px 1px #FF8000;
	border-top: 2px solid #FFF;
	border-right: 2px solid #FFF;
	border-bottom: 2px solid #AE5700;
	border-left: 2px solid #AE5700;
}

#clearButton {
	color: #FFF;
	text-shadow: -1px -1px 0px #44006F;
	background-color: #D20000;
	border-top: 2px solid #FF8484;
	border-right: 2px solid #FF8484;
	border-bottom: 2px solid #800000;
	border-left: 2px solid #800000;
	box-shadow: 0px 0px 2px #030303, inset 0px -20px 1px #B00000;
}