body{
	text-align: left;
	font-size: 19px;
	font-family: cursive, arial;
	letter-spacing: 1px;
	line-height: 27px;
	margin:0;
	user-select: none;
	background-color: #000
}

#container{
    text-align:center;
}

#gameArea{
	position: relative;
	width: 600px;
	height: 450px;
	left: calc(50vw - 300px);
	top: calc(50vh - 225px);
	border: 1px solid;
	background-color:#000;
}

#gameContent{
	position: relative;
	top: 50%;
	transform: translateY(-50%);
	transition: .5s;
}

#title{
	color: #2bd52b;
	letter-spacing: 2px;
	font-size: 64px;
}

#playBtnOuter{
	position: relative;
	top: 46px;
	left: calc(50% - 54px);
	width: 108px;
	height: 108px;
	border-radius: 100%;
	border: 3px solid #fff;
}

#playBtn{
	position: relative;
	top: 6px;
	font-size: 32px;
	padding: 27px 15px;
	border-radius: 100%;
	background-color: #2bd52b;
	color: #fff;
	font-weight: bold;
	text-shadow: 2px 2px 4px #000;
	cursor: pointer;
	transition: .5s;
}

#playBtn:active{
	text-shadow: 1px 1px 2px #000;
}

#levelSpan{
	color:#fff;
	font-size:100px;
}

.card {
	background-color: transparent;
	width: 69px;
	height: 90px;
	perspective: 1000px;
	display: inline-block;
	margin: 5px;
	cursor: pointer;
}

.cardInner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

.cardFront, .cardBack {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.cardFront {
  background-color: #bbb;
  color: black;
}

.cardBack {
  background-color: #2980b9;
  color: white;
  transform: rotateY(180deg);
}

.cardBackSpan {
	display: block;
	margin-top: calc(50% - 7px);
	font-size: 52px;
}

#levelSelect{
	padding: 10px;
	font-size: 32px;
	display: block;
	position: relative;
	left: calc(50% - 77px);
}

#levelSubmit{
	font-size: 32px;
    position: relative;
    top: 16px;
    padding: 5px 15px;
    border-radius: 5px;
    cursor: pointer;
}