style.css

:root {
	--lightgray: #efefef;
	--blue: steelblue;
	--white: #fff;
	--black: rgba(0, 0, 0, 0.8);
	--bounceEasing: cubic-bezier(0.51, 0.92, 0.24, 1.15);
}

* {
	box-sizing: border-box;
	padding: 0;
	margin: 0;
}

@font-face {
	font-family: pixles;
	src: url(https://fonts.gstatic.com/s/loveyalikeasister/v14/R70EjzUBlOqPeouhFDfR80-0FhOqJubN-BeL9Xxd.woff2) format('woff2');
}

/* ------------------------------------------------------------------------------------
  
  Envelope styling
  
  --------------------------------------------------------------------------------------- */

.container {
	position: relative;
}

.valentines {
	position: relative;
	top: 50px;
	cursor: pointer;
	animation: up 3s linear infinite;
}

.container:hover .card {
	top: -90px;
	transition: top 1s;
}

.envelope {
	position: relative;
	width: 300px;
	height: 200px;
	background-color: #f08080;
}

.envelope:before {
	background-color: #f08080;
	content: "";
	position: absolute;
	width: 212px;
	height: 212px;
	transform: rotate(45deg);
	top: -105px;
	left: 44px;
	border-radius: 30px 0 0 0;
}

.card {
	position: absolute;
	background-color: #eae2b7;
	width: 270px;
	height: 170px;
	top: 5px;
	left: 15px;
	box-shadow: -5px -5px 100px rgba(0, 0, 0, 0.4);
	transition: top 1s;
}

.card:before {
	content: "";
	position: absolute;
	border: 3px solid #003049;
	border-style: dotted;
	width: 240px;
	heighT: 140px;
	left: 12px;
	top: 12px;
}

.text {
	position: absolute;
	font-family: 'Brush Script MT', cursive;
	font-size: 28px;
	text-align: center;
	line-height: 25px;
	top: 19px;
	left: 85px;
	color: #003049;
}

.heart {
	background-color: #d62828;
	display: inline-block;
	height: 30px;
	margin: 0 10px;
	position: relative;
	top: 110px;
	left: 105px;
	transform: rotate(-45deg);
	width: 30px;
}

.heart:before,
.heart:after {
	content: "";
	background-color: #d62828;
	border-radius: 50%;
	height: 30px;
	position: absolute;
	width: 30px;
}

.heart:before {
	top: -15px;
	left: 0;
}

.heart:after {
	left: 15px;
	top: 0;
}

.hearts {
	position: absolute
}

.one,
.two,
.three,
.four,
.five {
	background-color: red;
	display: inline-block;
	height: 10px;
	margin: 0 10px;
	position: relative;
	transform: rotate(-45deg);
	width: 10px;
	top: 50px;
}

.one:before,
.one:after,
.two:before,
.two:after,
.three:before,
.three:after,
.four:before,
.four:after,
.five:before,
.five:after {
	content: "";
	background-color: red;
	border-radius: 50%;
	height: 10px;
	position: absolute;
	width: 10px;
}

.one:before,
.two:before,
.three:before,
.four:before,
.five:before {
	top: -5px;
	left: 0;
}

.one:after,
.two:after,
.three:after,
.four:after,
.five:after {
	left: 5px;
	top: 0;
}

.one {
	left: 10px;
	animation: heart 1s ease-out infinite;
}

.two {
	left: 30px;
	animation: heart 2s ease-out infinite;
}

.three {
	left: 50px;
	animation: heart 1.5s ease-out infinite;
}

.four {
	left: 70px;
	animation: heart 2.3s ease-out infinite;
}

.five {
	left: 90px;
	animation: heart 1.7s ease-out infinite;
}

.front {
	position: absolute;
	border-right: 180px solid #f4978e;
	border-top: 95px solid transparent;
	border-bottom: 100px solid transparent;
	left: 120px;
	top: 5px;
	width: 0;
	height: 0;
	z-index: 10;
}

.front:before {
	position: absolute;
	content: "";
	border-left: 300px solid #f8ad9d;
	border-top: 195px solid transparent;
	left: -120px;
	top: -95px;
	width: 0;
	height: 0;
}

.shadow {
	position: absolute;
	width: 330px;
	height: 25px;
	border-radius: 50%;
	background-color: rgba(0, 0, 0, 0.3);
	top: 265px;
	left: -15px;
	animation: scale 3s linear infinite;
	z-index: -1;
}

/* ------------------------------------------------------------------------------------
  
  Letter styling
  
  --------------------------------------------------------------------------------------- */

.modal {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 1rem;
	background: var(--black);
	cursor: pointer;
	visibility: hidden;
	opacity: 0;
	transition: all 0.35s ease-in;
}

.modal-dialog {
	position: relative;
	max-width: 800px;
	max-height: 80vh;
	border-radius: 5px;
	background: var(--white);
	overflow: auto;
	cursor: default;
}

.modal-dialog>* {
	padding: 1rem;
}

.modal-header,
.modal-footer {
	background: var(--lightgray);
}

.modal-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.modal-header .modal-close {
	font-size: 1.5rem;
}

.modal p+p {
	margin-top: 1rem;
}

.modal {
	visibility: hidden;
	opacity: 0;
	transition: all 0.35s ease-in;
}

.modal.is-visible {
	visibility: visible;
	opacity: 1;
}

.modal-content {
	text-align: center;
	scrollbar-width: none;
	background-color: #eae2b7;
	box-shadow: -5px -5px 100px rgba(0, 0, 0, 0.4);
	outline: 3px dotted #003049;
	outline-offset: -20px;
	padding: 30px;
}

.modal-content::-webkit-scrollbar {
	display: none;
}

/* ------------------------------------------------------------------------------------
  
  Game styling
  
  --------------------------------------------------------------------------------------- */

body {
	display: flex;
	overflow: hidden;
	font-family: pixles;
	font-size: 15px;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	margin: 0;
	justify-content: center;
	align-items: center;
	height: 100vh;
	width: 100%;
	background-color: #fae1dd;
}

body .game {
	display: flex;
	justify-content: center;
	align-items: center;
	width: 100%;
	height: 100%;
	position: absolute;
	/* left: calc(50% - 72px); */
	right: 0;
	/* top: calc(50% - 212px); */
	margin: auto;
}

body .game input {
	display: none;
}

body .game_loader {
	position: fixed;
	z-index: 15;
	background: #141415;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	opacity: 1;
	-webkit-animation: fadeOut 1.5s 7s forwards;
	animation: fadeOut 1.5s 7s forwards;
}

body .game_loader__inner {
	position: absolute;
	left: 0;
	right: 0;
	margin: auto;
	top: 50%;
	transform: translateY(-50%);
	font-size: 12px;
	width: 200px;
	text-align: center;
}

body .game_loader__inner h1 {
	font-weight: normal;
	font-size: 12px;
}

body .game_loader__inner .logo {
	width: 200px;
	height: 70px;
	margin: auto;
	margin-bottom: 10px;
	transform: scale(0);
	opacity: 0;
	-webkit-animation: logo 2s forwards;
	animation: logo 2s forwards;
}

body .game_loader__inner .logo img {
	width: 100%;
}

body .game_loader__inner span {
	color: rgb(214, 179, 248);
	display: block;
	opacity: 0;
	margin-top: 8px;
	-webkit-animation: fadeIn 1.5s 3s forwards;
	animation: fadeIn 1.5s 3s forwards;
}

body .game_loader__inner .bar {
	background: #3c3c3e;
	position: relative;
	height: 2px;
	margin-top: 30px;
	opacity: 0;
	-webkit-animation: fadeIn 1.5s 2.5s forwards;
	animation: fadeIn 1.5s 2.5s forwards;
}

body .game_loader__inner .bar_inner {
	width: 0px;
	height: 100%;
	background: white;
	position: absolute;
	top: 0;
	-webkit-animation: bar 3s 3s forwards;
	animation: bar 3s 3s forwards;
}

body .game_loader__inner .subtitle {
	color: #f49112;
	margin: -18px 0px 40px 0;
	opacity: 0;
	-webkit-animation: fadeIn 1.5s 1.5s forwards;
	animation: fadeIn 1.5s 1.5s forwards;
}

body .game_intro {
	display: flex;
	justify-content: center;
	align-items: center;
	position: absolute;
	width: 100%;
	z-index: 14;
}

body .game_intro input {
	display: none;
}

body .game_intro input[type=radio]:checked+div {
	opacity: 1;
	/* top: 140px; */
	transition: all 0.5s 0.8s;
	pointer-events: all;
}

body .game_intro input[type=radio]:checked+div label {
	opacity: 1;
	bottom: -10px;
}

body .game_intro input#intro-1[type=radio]:checked+div {
	/* top: 140px; */
	opacity: 0;
	transition: all 0.5s 0.8s;
	-webkit-animation: shake 0.5s 9s forwards;
	animation: shake 0.5s 9s forwards;
	pointer-events: all;
}

body .game_intro input#intro-1[type=radio]:not(:checked)+div {
	opacity: 0;
	/* top: 160px; */
	transition: all 0.5s 0.8s;
}

body .game_intro input[type=radio]#intro-5:checked+div+input+div {
	opacity: 0;
	pointer-events: none !important;
}

body .game_intro input[type=radio]#intro-5:checked+div {
	opacity: 0;
	-webkit-animation: showResponse 2s 2s forwards;
	animation: showResponse 2s 2s forwards;
}

body .game_intro input[type=radio]#intro-6:checked+.overlay {
	display: none;
}

body .game_intro .overlay {
	position: fixed;
	top: 0 !important;
	width: 140%;
	left: 0;
	opacity: 1;
	height: 260%;
	background: #141415;
	z-index: -1;
	pointer-events: all;
	transition: all 4s 0.7s !important;
}

body .game_intro .dialogue {
	position: absolute;
	opacity: 0;
	width: 170px;
	padding: 15px;
	border-radius: 4px;
	font-size: 13px;
	text-align: center;
	transition: all 0.2s 0.2s;
	pointer-events: none;
	background: white;
	color: #141415;
}

body .game_intro .dialogue.end {
	position: absolute;
	width: 130px;
	/* left: 0; */
	text-align: center;
	/* right: 0; */
	pointer-events: none;
	/* top: 100px !important; */
	margin: auto;
	transform: translateY(35vh);
	background: white;
	color: #141415;
	padding: 8px;
	border-radius: 5px;
}

body .game_intro .dialogue label {
	border-radius: 5px;
	position: absolute;
	right: -6px;
	bottom: -20px;
	z-index: 1;
	opacity: 0;
	cursor: pointer;
	transition: all 0.4s 1s;
}

body .game_intro .dialogue label img {
	transform: scale(2);
	-ms-interpolation-mode: nearest-neighbor;
	image-rendering: -moz-crisp-edges;
	image-rendering: pixelated;
}

body .game_intro .dialogue label:hover {
	right: -13px;
	background: #66bf60;
}

/* ------------------------------------------------------------------------------------
  
  Animation
  
  --------------------------------------------------------------------------------------- */

@keyframes up {
	0%,
	100% {
		transform: translateY(0);
	}
	50% {
		transform: translateY(-30px);
	}
}

@keyframes heart {
	0% {
		transform: translateY(0) rotate(-45deg) scale(0.3);
		opacity: 1;
	}
	100% {
		transform: translateY(-150px) rotate(-45deg) scale(1.3);
		opacity: 0.5;
	}
}

@keyframes scale {
	0%,
	100% {
		transform: scaleX(1);
	}
	50% {
		transform: scaleX(0.85);
	}
}

@-webkit-keyframes drip {
	0% {
		height: 0;
	}
	2% {
		height: 6px;
	}
	5% {
		height: 6px;
		top: 14px;
	}
	22% {
		top: 158px;
		height: 4px;
		opacity: 1;
	}
	23% {
		opacity: 0;
		height: 0px;
	}
	100% {
		opacity: 0;
	}
}

@keyframes drip {
	0% {
		height: 0;
	}
	2% {
		height: 6px;
	}
	5% {
		height: 6px;
		top: 14px;
	}
	22% {
		top: 158px;
		height: 4px;
		opacity: 1;
	}
	23% {
		opacity: 0;
		height: 0px;
	}
	100% {
		opacity: 0;
	}
}

@-webkit-keyframes showResponse {
	0% {
		opacity: 1;
		top: calc(50% - 36px);
	}
	70% {
		opacity: 1;
		top: calc(50% - 46px);
	}
	100% {
		opacity: 0;
		top: calc(50% - 46px);
	}
}

@keyframes showResponse {
	0% {
		opacity: 1;
		top: calc(50% - 36px);
	}
	70% {
		opacity: 1;
		top: calc(50% - 46px);
	}
	100% {
		opacity: 0;
		top: calc(50% - 46px);
	}
}

@-webkit-keyframes forcedResponse {
	0% {
		opacity: 1;
		top: calc(50% - 36px);
	}
	70% {
		opacity: 1;
		top: calc(50% - 46px);
	}
	100% {
		opacity: 1;
		top: calc(50% - 46px);
	}
}

@keyframes forcedResponse {
	0% {
		opacity: 1;
		top: calc(50% - 36px);
	}
	70% {
		opacity: 1;
		top: calc(50% - 46px);
	}
	100% {
		opacity: 1;
		top: calc(50% - 46px);
	}
}

@-webkit-keyframes logo {
	0% {
		opacity: 0;
		transform: scale(0);
	}
	100% {
		opacity: 1;
		transform: scale(1);
	}
}

@keyframes logo {
	0% {
		opacity: 0;
		transform: scale(0);
	}
	100% {
		opacity: 1;
		transform: scale(1);
	}
}

@-webkit-keyframes fadeIn {
	0% {
		opacity: 0;
	}
	100% {
		opacity: 1;
	}
}

@keyframes fadeIn {
	0% {
		opacity: 0;
	}
	100% {
		opacity: 1;
	}
}

@-webkit-keyframes fadeOut {
	0% {
		opacity: 1;
	}
	100% {
		opacity: 0;
	}
}

@keyframes fadeOut {
	0% {
		opacity: 1;
	}
	100% {
		opacity: 0;
	}
}

@-webkit-keyframes bar {
	0% {
		width: 0%;
	}
	100% {
		width: 100%;
	}
}

@keyframes bar {
	0% {
		width: 0%;
	}
	100% {
		width: 100%;
	}
}

@-webkit-keyframes dialogueIn {
	0% {
		opacity: 0;
		left: 2px;
	}
	10% {
		left: 2px;
	}
	20% {
		left: 0px;
	}
	30% {
		left: 2px;
	}
	40% {
		left: 4px;
	}
	50% {
		left: 8px;
	}
	60% {
		left: 8px;
	}
	70% {
		left: 2px;
	}
	80% {
		left: 5px;
	}
	90% {
		left: 6px;
	}
	100% {
		opacity: 1;
		left: 0px;
	}
}

@keyframes dialogueIn {
	0% {
		opacity: 0;
		left: 20px;
	}
	10% {
		left: 20px;
	}
	20% {
		left: 0px;
	}
	30% {
		left: 20px;
	}
	40% {
		left: 4px;
	}
	50% {
		left: 18px;
	}
	60% {
		left: 8px;
	}
	70% {
		left: 20px;
	}
	80% {
		left: 5px;
	}
	90% {
		left: 16px;
	}
	100% {
		opacity: 1;
	}
}

@-webkit-keyframes shake {
	0% {
		transform: translateX(0px);
		opacity: 1;
	}
	10% {
		transform: translateX(6px);
	}
	20% {
		transform: translateX(-6px);
	}
	30% {
		transform: translateX(6px);
	}
	40% {
		transform: translateX(-6px);
	}
	50% {
		transform: translateX(6px);
	}
	60% {
		transform: translateX(-6px);
	}
	70% {
		transform: translateX(6px);
	}
	80% {
		transform: translateX(-6px);
	}
	90% {
		transform: translateX(6px);
	}
	100% {
		transform: translateX(0px);
		opacity: 1;
	}
}

@keyframes shake {
	0% {
		transform: translateX(0px);
		opacity: 1;
	}
	10% {
		transform: translateX(6px);
	}
	20% {
		transform: translateX(-6px);
	}
	30% {
		transform: translateX(6px);
	}
	40% {
		transform: translateX(-6px);
	}
	50% {
		transform: translateX(6px);
	}
	60% {
		transform: translateX(-6px);
	}
	70% {
		transform: translateX(6px);
	}
	80% {
		transform: translateX(-6px);
	}
	90% {
		transform: translateX(6px);
	}
	100% {
		transform: translateX(0px);
		opacity: 1;
	}
}

@-webkit-keyframes end {
	0% {
		transform: translateX(0px);
		opacity: 1;
	}
	10% {
		transform: translateX(6px);
	}
	20% {
		transform: translateX(-6px);
	}
	30% {
		transform: translateX(6px);
	}
	40% {
		transform: translateX(-6px);
	}
	50% {
		transform: translateX(6px);
	}
	60% {
		transform: translateX(-6px);
	}
	70% {
		transform: translateX(6px);
	}
	80% {
		transform: translateX(-6px);
	}
	90% {
		transform: translateX(6px);
	}
	100% {
		transform: translateX(0px);
		opacity: 0;
	}
}

@keyframes end {
	0% {
		transform: translateX(0px);
		opacity: 1;
	}
	10% {
		transform: translateX(6px);
	}
	20% {
		transform: translateX(-6px);
	}
	30% {
		transform: translateX(6px);
	}
	40% {
		transform: translateX(-6px);
	}
	50% {
		transform: translateX(6px);
	}
	60% {
		transform: translateX(-6px);
	}
	70% {
		transform: translateX(6px);
	}
	80% {
		transform: translateX(-6px);
	}
	90% {
		transform: translateX(6px);
	}
	100% {
		transform: translateX(0px);
		opacity: 0;
	}
}

@-webkit-keyframes shake-debug {
	0% {
		transform: translateX(0px) scale(0.5);
	}
	10% {
		transform: translateX(10px) scale(0.5);
	}
	20% {
		transform: translateX(0px) scale(0.5);
	}
	30% {
		transform: translateX(10px) scale(0.5);
	}
	40% {
		transform: translateX(-10px) scale(0.5);
	}
	50% {
		transform: translateX(10px) scale(0.5);
	}
	60% {
		transform: translateX(-10px) scale(0.5);
	}
	70% {
		transform: translateX(10px) scale(0.5);
	}
	80% {
		transform: translateX(-10px) scale(0.5);
	}
	90% {
		transform: translateX(10px) scale(0.5);
	}
	100% {
		transform: translateX(0px) scale(0.5);
	}
}

@keyframes shake-debug {
	0% {
		transform: translateX(0px) scale(0.5);
	}
	10% {
		transform: translateX(10px) scale(0.5);
	}
	20% {
		transform: translateX(0px) scale(0.5);
	}
	30% {
		transform: translateX(10px) scale(0.5);
	}
	40% {
		transform: translateX(-10px) scale(0.5);
	}
	50% {
		transform: translateX(10px) scale(0.5);
	}
	60% {
		transform: translateX(-10px) scale(0.5);
	}
	70% {
		transform: translateX(10px) scale(0.5);
	}
	80% {
		transform: translateX(-10px) scale(0.5);
	}
	90% {
		transform: translateX(10px) scale(0.5);
	}
	100% {
		transform: translateX(0px) scale(0.5);
	}
}