/*
* {
	transition: width .1s ease, height .1s ease, padding .1s ease;
}
*/

#WK {
	display: flex;
   overflow: hidden;
	flex-direction: column;
   min-height: 100%;
   min-width: 100%;
}
#WK_Background {
	position: fixed;
	left: 0;
	top: 0;
	bottom: 0;
	right: 0;
	z-index: -1;
}
#WK_Content {
   position: absolute;
   min-width: 100%;
   min-height: 100%;
   display: flex;
   overflow: hidden;
   flex-direction: column;
   align-items: center;
   justify-content: center;
   /*pointer-events: none;*/
   /*transform-origin: center*/
}

.WK_ButtonClose {
	position: fixed;
	top: 50px;
	right: 10px;
	width: 300px;
	border: 0;
	background-color: transparent;
	z-index: 100011;
}

.WK_ButtonOpen {
	position: fixed;
	bottom: 150px;
	left: 10px;
	width: 300px;
	border: 0;
	background-color: transparent;
	z-index: 100005;
}

.WK_Container {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	transform-origin: center;	
	perspective: 2000px;
}

.WK_Envelope {
   position: relative;
   opacity: 0;
   transform-origin: center;
   transform-style: preserve-3d;
   width: 820px;  /*var(--envelope-width);*/
   height: 520px; /*var(--envelope-height);*/
   top: 0px;
   /*margin-bottom: 100px;*/
   /*visibility: visible;*/
}
.WK_Envelope .Hover,
.WK_Envelope.Hover {
	transform: rotateY(180deg);
}

.WK_EnvelopeCard {
	position: absolute;
	width: 100%;
	height: 100%;
	top: 0;	
	overflow: hidden;
}
.WK_EnvelopeCard img, 
.WK_EnvelopeCard .Text {
	position: absolute;
	width: 100%;
	height: 100%;
}
.WK_EnvelopeCard .Text {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	transform-origin: center;	
	text-align: center;
}
.WK_EnvelopeCard.Front .Text p {
  font-size: 1.3rem;
  font-weight: bold;
  padding-top: 290px;
}

.WK_EnvelopeCard.Back,
.WK_EnvelopeCard.Front {
	backface-visibility: hidden;
}
.WK_EnvelopeCard.Back {
 	transform:rotateY(180deg);
}
.WK_EnvelopeCard.Front {
 	transform:rotateY(0deg);
 	z-index: 2;
}

.WK_EnvelopeOpen {
   position: relative;
   transform-origin: top;
   transform-style: preserve-3d;
	perspective: 1000px;
	width: 100%;
	height: 86px;
	top: 90px;
	transform:rotateY(180deg);
	opacity: 0; 
}
.WK_EnvelopeOpenCard {
	position: absolute;
	width: 100%;
	height: 86px;
}
.WK_EnvelopeOpenCard.Back,
.WK_EnvelopeOpenCard.Front {
	backface-visibility: hidden;
}
.WK_EnvelopeOpenCard.Back {
 	transform:rotateY(180deg);
}
.WK_EnvelopeOpenCard.Front {
 	transform:rotateY(0deg);
}

.WK_EnvelopeContent {
	position: absolute;
	top: 90px;
	opacity: 0; 
}

.WK_Letter {
	position: absolute;
	top: 0px;
	left: 0px;
	width: 820px;
	height: 430px;
	overflow-y: scroll;
	overflow-x: hidden;
 	transform:rotateY(180deg);
}

.WK_Video {
	background-size: cover;
	background-color: black;
	opacity: 0.5;
	width: 100%;
	height: 100%;
	object-fit: cover;
}