#wax {
	display: block;
	width: 100px;
	height: 100px;
	background-image: url(../img/wax.png);
	background-size: 100px 200px;
	background-repeat: no-repeat;
	/* animation: animation2 1s infinite alternate-reverse; */
}

.wax-half {
	display: none;
	margin: 0 auto;
	margin-top: 30px;
	width: 100px;
	height: 50px;
	background-image: url(../img/wax.png);
	background-size: 100px 200px;
	background-repeat: no-repeat;
	background-position-y: -50px;
}

.envelope-stamp {
	float: right;
	display: block;
	width: 67.5px;
	height: 55px;
	background-image: url(../img/stamp-base.png);
	background-size: 100% 100%;
	background-repeat: no-repeat;
	position: absolute;
	right: 10px;
	top: 10px;
}

#stamp img {
	display: block;
	margin: 8% auto;
	height: 82%;
}

.envelope-recipient {
	font-size: 24px;
	line-height: 1.6;
	float: left;
	cursor: default;
	user-select: none;
	-webkit-user-select: none;
	-moz-user-select: none;
	-o-user-select: none;
	color: #9b4849;
}

#envelope {
	display: none;
}

.envelope-open-btn {
	width: 100px;
	text-align: center;
	margin: auto;
	margin-top: 30px;
	display: block;
}

.envelope-close-btn {
	position: fixed;
	bottom: 5px;
	right: 8px;
	font-size: 14px;
	display: block;
}

.letter-close-area {
	position: absolute;
	bottom: 0px;
	right: 0px;
	display: block;
	width: 100%;
	height: 100%;
	cursor: grab;
}

/**************container***************/

.envelope-container {
	position: relative;
	width: 80vw;
	height: 200px;
	margin: 280px auto 0;
	perspective: 1000px;
	-webkit-perspective: 1000px;
	-moz-perspective: 1000px;
	transition: all 1s;
}

.envelope-flip {
	width: 100%;
	height: 100%;
	position: absolute;
	transform: rotateY(0deg);
	-webkit-transform: rotateY(0deg);
	-moz-transform: rotateY(0deg);
	transform-style: preserve-3d;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	transition: transform 0.7s 0s;
	-webkit-transition: -webkit-transform 0.7s 0s;
	-moz-transition: -moz-transform 0.7s 0s;
	transform-origin: center center;
	-webkit-transform-origin: center center;
	-moz-transform-origin: center center;
}

.envelope-front,
.envelope-back {
	position: absolute;
	width: 100%;
	height: 100%;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
	-moz-backface-visibility: hidden;
}

.envelope-back {
	transform: rotateY(180deg);
	-webkit-transform: rotateY(180deg);
	-moz-transform: rotateY(180deg);
	background: #837362;
	box-shadow: inset 0 10px 30px -10px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(0, 0, 0, 0.2), inset 0 2px 0 rgba(255, 255, 255, 0.2);
}

.envelope-container.envelope-flipped .envelope-flip {
	transform: rotateY(180deg);
	-webkit-transform: rotateY(180deg);
	-moz-transform: rotateY(180deg);
}

.no-csstransforms3d .envelope-container.envelope-flipped .envelope-back {
	display: none;
}

/* lid */

.envelope-lid {
	position: relative;
	width: 100%;
	height: 50%;
	perspective: 800px;
	-webkit-perspective: 800px;
	-moz-perspective: 800px;
	z-index: 2;
	transition: z-index 0s 1s;
	-webkit-transition: z-index 0s 1s;
	-moz-transition: z-index 0s 1s;
}

.no-csstransforms3d .envelope-lid {
	transition: none;
	-webkit-transition: none;
	-moz-transition: none;
}

.envelope-opened .envelope-lid {
	z-index: -1;
	transition: z-index 0s .5s;
	-webkit-transition: z-index 0s .5s;
	-moz-transition: z-index 0s .5s;
}

.no-csstransforms3d .envelope-opened .envelope-lid {
	transition: none;
	-webkit-transition: none;
	-moz-transition: none;
}

.no-csstransforms3d .envelope-lid .lid-back {
	display: none;
}

.no-csstransforms3d .envelope-opened .envelope-lid .lid-back {
	display: block;
	top: -150px;
}

/* flip */

.lid-flip {
	width: 100%;
	height: 100%;
	position: absolute;
	transform-style: preserve-3d;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	transition: transform 0.5s 1s;
	-webkit-transition: -webkit-transform 0.5s 1s;
	-moz-transition: -moz-transform 0.5s 1s;
	transform-origin: left top;
	-webkit-transform-origin: left top;
	-moz-transform-origin: left top;
}

.lid-front,
.lid-back {
	position: absolute;
	width: 100%;
	height: 100%;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
	-moz-backface-visibility: hidden;
}

.lid-back {
	transform: rotateX(180deg);
	-webkit-transform: rotateX(180deg);
	-moz-transform: rotateX(180deg);
}

.envelope-opened .lid-flip {
	transform: rotateX(180deg);
	-webkit-transform: rotateX(180deg);
	-moz-transform: rotateX(180deg);
	transition-duration: 0.5s;
	-webkit-transition-duration: 0.5s;
	-moz-transition-duration: 0.5s;
	transition-delay: 0s;
	-webkit-transition-delay: 0s;
	-moz-transition-delay: 0s;
}

.letter-flip>div,
.lid-flip>div,
.envelope-flip>div {
	box-sizing: border-box;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
}

.lid-front,
.envelope-front {
	background: beige url("../img/texture.png");
	border: 1px #eae1d5 solid;
	box-shadow: inset 0 0 10px 1px rgba(255, 255, 255, 0.6), 0 2px 3px -2px rgba(0, 0, 0, 0.6);
	padding: 20px 30px;
	color: #837362;
	text-shadow: 0 1px 0 #fff, 0 1px 0 #fff;
}

.envelope-front {
	font-size: 1.25em;
	background: beige url("../img/texture.png");
	border: 1px #eae1d5 solid;
	display: flex;
	justify-content: center;
	align-items: center;
	cursor: pointer;
	transition: box-shadow 0.2s ease, opacity 0.2s ease;
}

.envelope-front:hover {
	box-shadow: inset 0 0 15px 2px rgba(255, 255, 255, 0.8), 0 4px 6px -3px rgba(0, 0, 0, 0.7);
	opacity: 0.95;
}

.lid-front {
	font-size: 1.25em;
	border-radius: 0 0 40px 40px;
}

.lid-back {
	background: #837362;
	border-radius: 40px 40px 0 0;
	border: 35px solid rgba(255, 255, 255, 0.1);
	border-bottom: none;
	box-shadow: inset 0 10px 30px 10px rgba(0, 0, 0, 0.1);
}

/* top */

.envelope-content-top {
	text-align: right;
	background: beige url("../img/texture.png");
	background: -moz-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(163, 140, 130, 0.17) 100%), url("../img/texture.png");
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(163, 140, 130, 0.17))), url("../img/texture.png");
	background: -webkit-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(163, 140, 130, 0.17) 100%), url("../img/texture.png");
	background: -o-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(163, 140, 130, 0.17) 100%), url("../img/texture.png");
	background: -ms-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(163, 140, 130, 0.17) 100%), url("../img/texture.png");
	box-sizing: border-box;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	width: 100%;
	height: 65%;
	position: absolute;
	left: 0;
	bottom: 0;
	z-index: 1;
	border: 1px #eae1d5 solid;
	box-shadow: inset 0 0 10px 1px rgba(255, 255, 255, 0.6), 0 -2px 4px -3px rgba(0, 0, 0, 0.75), 0 2px 3px -2px rgba(0, 0, 0, 0.6);
}

/* data */

#data {
	height: 270px;
	overflow-y: auto;
	transition: all 0.5s;
	font-family: DongJing;
	position: relative;
	z-index: 1;
}

#data::-webkit-scrollbar {
	width: 6px;
}

#data::-webkit-scrollbar-thumb {
	background: rgba(144, 129, 114, 0.5);
	border-radius: 3px;
}

#data::-webkit-scrollbar-thumb:hover {
	background: rgba(144, 129, 114, 0.7);
}

#data::-webkit-scrollbar-track {
	border-radius: 3px;
	background-color: rgba(234, 225, 213, 0.3);
}

/* letter */

.envelope-letter {
	background: #fafafa;
	width: 90%;
	height: 95%;
	position: absolute;
	left: 5%;
	top: 5%;
	z-index: 0;
	transition: 0s 0s;
	-webkit-transition: .5s .5s;
	-moz-transition: .5s .5s;
	-o-transition: 0s 0s;
}

.envelope-opened .envelope-letter {
	top: -105%;
	height: 160%;
	transition: .5s .5s;
	-webkit-transition: .5s .5s;
	-moz-transition: .5s .5s;
	-o-transition: .5s .5s;
}

.letter-container {
	position: absolute;
	width: 100%;
	perspective: 800px;
	-webkit-perspective: 800px;
	-moz-perspective: 800px;
	top: 0;
	left: 0;
	transition: 0s 0s;
	-webkit-transition: 0s 0s;
	-moz-transition: 0s 0s;
	z-index: 1;
}

.letter-flip {
	width: 100%;
	height: 100%;
	position: absolute;
	transform-style: preserve-3d;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	transition: transform 0.5s 0s;
	-webkit-transition: -webkit-transform 0.5s 0s;
	-moz-transition: -moz-transform 0.5s 0s;
	transform-origin: left top;
	-webkit-transform-origin: left top;
	-moz-transform-origin: left top;
}

.letter-front,
.letter-back {
	position: absolute;
	width: 100%;
	height: 100%;
	backface-visibility: hidden;
	-webkit-backface-visibility: hidden;
	-moz-backface-visibility: hidden;
}

.letter-back {
	transform: rotateX(180deg);
	-webkit-transform: rotateX(180deg);
	-moz-transform: rotateX(180deg);
}

.envelope-opened .letter-flip {
	transform: rotateX(180deg);
	-webkit-transform: rotateX(180deg);
	-moz-transform: rotateX(180deg);
	transition-duration: 0.5s;
	-webkit-transition-duration: 0.5s;
	-moz-transition-duration: 0.5s;
	transition-delay: 1s;
	-webkit-transition-delay: 1s;
	-moz-transition-delay: 1s;
}

.envelope-opened .letter-container {
	z-index: -1;
	transition: z-index 0s 1.5s;
	-webkit-transition: z-index 0s 1.5s;
	-moz-transition: z-index 0s 1.5s;
}

.letter-front {
	background: #fafafa;
	box-shadow: 0 2px 3px 0 rgba(0, 0, 0, 0.2);
}

.no-csstransforms3d .envelope-opened .letter-front {
	display: none;
}

.letter-back {
	background: #fafafa;
	background: -webkit-linear-gradient(top, #fafafa 90%, #f7f7f7 100%);
	background: -moz-linear-gradient(top, #fafafa 80%, #f7f7f7 100%);
	padding: 40px 40px 0;
	font-size: 18px;
	line-height: 1.4;
	border-bottom: 1px solid rgba(255, 255, 255, 0.5);
	box-shadow: 0 -5px 8px -4px rgba(0, 0, 0, 0.15);
}

.no-csstransforms3d .envelope-opened .letter-back {
	top: -140px;
}








@keyframes animation1 {
	from {
		opacity: 1;
	}

	to {
		opacity: 0.3;
	}
}

@-webkit-keyframes animation1

/* Safari 与 Chrome */
	{
	from {
		opacity: 1;
	}

	to {
		opacity: 0.3;
	}
}

@keyframes animation2 {
	from {
		opacity: 1;
	}

	to {
		opacity: 0.5;
	}
}

@-webkit-keyframes animation2

/* Safari 与 Chrome */
	{
	from {
		opacity: 1;
	}

	to {
		opacity: 0.5;
	}
}


.bgImg {
	background-image: url(../img/letter_bg.jpg);
	background-position: center center;
	background-size: cover;
	background-repeat: no-repeat;
	width: 100%;
	height: calc(40px + 280px);
	position: absolute;
	left: 0;
	top: 0;
	z-index: 0;
	opacity: 0.7;
	animation: animation3 5s infinite alternate-reverse;
}



@keyframes animation3 {
	from {
		opacity: 0.1;
	}

	to {
		opacity: 0.3;
	}
}

@-webkit-keyframes animation3

/* Safari 与 Chrome */
	{
	from {
		opacity: 0.1;
	}

	to {
		opacity: 0.15;
	}
}