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HTML

            
              doctype html
html(lang="en")
    head
        title Duck hunt css!
        link(href='./styles.css', rel='stylesheet')
    body
        div#stage
            div#dogIntro
            - var n = 0
            while n < 10
                - n++
                input(type='checkbox' id='d#{n}')
                - var i = 0
                while i < 3
                    - i++
                    input(type='checkbox' id='bc#{n}-#{i}')
            div#dogLaugh
                - var n = 0
                while n < 10
                    - n++
                    div
                        span
                        span
            div#shootingArea
                - var n = 0
                while n < 10
                    - n++
                    div
                        div
                            - var i = 0
                            while i < 3
                                - i++
                                label(for='bc#{n}-#{i}')
                            div
                                label(for='d#{n}')
                                span

            div#bullets.console
                div
                    - var n = 0
                    while n < 10
                        - n++
                        div
                            span
                            span
                            span
                span SHOT

            div#hits.console
                span HIT
                div
                    - var n = 0
                    while n < 10
                        - n++
                        span
            
            div#points.console
                div.pts1
                    div.pts2
                        div.pts3
                            div.pts4
                                div.pts5
                                    div.pts6
                                        div.pts7
                                            div.pts8
                                                div.pts9
                                                    div.pts10
                                                        span 000000
                                                        span 000100
                                                        span 000200
                                                        span 000300
                                                        span 000400
                                                        span 000500
                                                        span 000600
                                                        span 000700
                                                        span 000800
                                                        span 000900
                                                        span 001000
                span SCORE
!

CSS

            
              @keyframes dogMove {
  from {left:0px;}
	to {left:450px;}
}



@keyframes dogWalk {
	0% { background-position:0px 0px; }
	3% { background-position:-120px 0px; }
	6% { background-position:-240px 0px; }
	9% { background-position:-360px 0px; }	
	12% { background-position:0px 0px; }
	15% { background-position:-120px 0px; }
	18% { background-position:-240px 0px; }
	21% { background-position:-360px 0px; }	
	24% { background-position:0px 0px; }
	27% { background-position:-120px 0px; }
	30% { background-position:-240px 0px; }
	33% { background-position:-360px 0px; }	
	36% { background-position:0px 0px; }
	39% { background-position:-120px 0px; }
	42% { background-position:-240px 0px; }
	45% { background-position:-360px 0px; }	
	48% { background-position:0px 0px; }
	51% { background-position:-120px 0px; }
	54% { background-position:-240px 0px; }
	57% { background-position:-360px 0px; }	
	60% { background-position:0px 0px; }
	63% { background-position:-120px 0px; }
	66% { background-position:-240px 0px; }
	69% { background-position:-360px 0px;  } /* Walk */

	72% { background-position:-480px 0px; }  /* Snif  */
	75% { background-position:-360px 0px;  }
	78% { background-position:-480px 0px;  }
	81% { background-position:-360px 0px;  }
	
	90% { background-position:-0px -110px; } /* Find */
	93% {background-position:-120px -110px;} /* Jump */
	96% {background-position:-240px -110px;}
	100% { background-position: 1000px 1000px; }/*Hide*/
}



@keyframes dogLaugh {
	0% { background-position:-360px -110px; }
	50% { background-position:-480px -110px; }
	100% { background-position:-360px -110px; }
}


@keyframes dogShow {
	0% { top:560px; }
	25% { top: 480px; }
	75% { top: 480px; }
	100% { top:560px; }
}


@keyframes lvlStart {
	from {left:5000px;}
	to {left:0px;}
}


@keyframes lvlEnd {
	from {left:0px;}
	to {left:5000px;}
}

@keyframes duckWing { 
	0% { background-position:0px -220px; }
	33% { background-position:-85px -220px; }
	66% { background-position:-170px -220px; }
	100% { background-position:-170px -220px; }
}

@keyframes duck1 {
	from {left:-100px; top: 0px;}
	to {left:1280px; top: 400px}
}

@keyframes duck2 {
	0% {left:-100px; top: 300px;}
	50% { left: 200px; top: 0px; }
	100% {left:1280px; top: 100px;}
}

@keyframes duck3 {
	0% {left:-100px; top: 600px;}
	50% { left: 600px; top: 0px; }
	100% {left:1280px; top: 600px;}
}

@keyframes duck4 {
	0% {left:-100px; top: 100px;}
	50% { left: 800px; top: 500px; }
	100% {left:1280px; top: 0px;}
}

@keyframes duck5 {
	0% {left:-100px; top: 600px;}
	50% { left: 600px; top: 0px; }
	100% {left:1280px; top: 600px;}
}

@keyframes duck6 {
	0% {left:-100px; top: 0px;}
	30% { left: 800px; top: 150px; }
	60% { left: 200px; top: 0px; }	
	100% {left:1280px; top: 600px;}
}

@keyframes duck7 {
	0% {left:-100px; top: 300px;}
	30% { left: 100px; top: 10px; }
	60% { left: 600px; top: 600px; }	
	100% {left:1280px; top: 0px;}
}

@keyframes duck8 {
	0% {left:-100px; top: 100px;}
	30% { left: 750px; top: 500px; }
	60% { left: 600px; top: 600px; }	
	100% {left:1280px; top: 0px;}
}

@keyframes duck9 {
	0% {left:-100px; top: 300px;}
	20% { left: 300px; top: 10px; }
	40% { left: 400px; top: 600px; }
	60% { left: 900px; top: 200px; }
	80% { left: 1100px; top: 500px; }	
	100% {left:1280px; top: 0px;}
}


@keyframes duck10 {
	0% {left:-100px; top: 300px;}
	10% { left: 300px; top: 300px; }
	20% { left: 900px; top: 600px; }
	30% { left: 0px; top: 200px; }
	40% { left: 1100px; top: 500px; }	
	50% { left: 600px; top: 10px; }
	60% { left: 400px; top: 600px; }
	70% { left: 900px; top: 200px; }
	80% { left: 400px; top: 500px; }
	90% { left: 1100px; top: 200px; }
	100% {left:1280px; top: 8px;}
}


@keyframes duckFall {
	from { top:0px; }
	to { top: 769px; }
}


#stage {
	background: #897200 url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/stage.png') no-repeat left top;
	width:1280px;
	height:769px;
	position:relative;
	overflow:hidden;

	& > input {
		display:none;
	
  }
}


#shootingArea {
	width:1280px;
	height:550px;
	overflow:hidden;

	& > div {
		position:absolute;
		width:1280px;
		height:550px;
		left:5000px;
		overflow:hidden;

		& > div {
			position:relative;	
			width:100%;
			height:100%;

			& > label {
				position:absolute;
				top:0;
				left:0;
				height:550px;
				width:1280px;				
			}
		}

	}
}



#shootingArea > div > div > div > label, #shootingArea > div > div > div > span {
	background: url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/sprite.png') no-repeat;
	height:76px;
	display:block;
	width:70px;
	position:relative;
	background-position:0px -220px;
	
	animation: duckWing 200ms infinite step-end alternate;
}

#shootingArea > div > div > div > span {
	display:none;
}









.console {
	height:56px;
	background-color:#000;
	border: 1px solid #7FCE16;	
	position:absolute;
	bottom:10px;
	border-radius: 5px;
	display:relative;
	overflow:hidden;
}

#bullets {
	width: 78px;
	left: 305px;

	& > div {
		position:relative;
		margin-left:9px;
		margin-top:5px;

		& > div {
			width: 78px;
			height: 56px;
			position:absolute;
			left:5000px;
			top:0;
		}

	}

	div span {
		background: #000 url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/sprite.png') no-repeat left top;
		display:block;
		height:20px;
		width:20px;
		float:left;
		background-position: 0px -557px;		
	}

	& > span {
		color: #0099FF;
		position:relative;
		top:25px;
		left:7px;
		font-weight:bold;
		letter-spacing:3px;	
	}
	
}






#hits {
	width:313px;
	left: 405px;	

	& > span {
		color: #33CC33;
		letter-spacing:5px;
		font-size:28px;
		margin-left:5px;
		vertical-align:top;	
	}

	& > div {
		display:inline-block;	
		width:230px;
		height:45px;

		& > span {
			background: #000 url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/sprite.png') no-repeat left top;
			display:block;
			height:20px;
			width:20px;
			float:left;
			background-position: -50px -557px;	
			margin-top:10px;	
			margin-right:3px;
		}

	}
}





#points {
	width: 142px;
	left:740px;

	div {
		position:absolute;
		background-color:#000;
		color:#fff;	
		width:10000px;
	
		span {
			display:block;
			float:left;
			width:142px;
			font-size:25px;
			letter-spacing:3px;
			text-align:center;
			font-family:"Times New Roman";
		}

	}

	& > span {
		position:relative;
		top:25px;
		left:22px;
	
		color:#fff;
		font-size:25px;
		letter-spacing:3px;
		text-align:center;
		font-family:"Times New Roman";
	}
}










#dogIntro {
	position:absolute;
	bottom: 120px;
	z-index:1;
	background: url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/sprite.png') no-repeat;
	width: 120px; 
	height: 100px;
}



#dogLaugh {
	width:1280px;
	height:570px;
	overflow:hidden;
	position:absolute;
	top:0;
	left:0;

	& > div {
		position:absolute;
		top:560px;
		left:560px;	

		& > span {
			width: 150px; 
			height: 100px;	
		}

		& > span:nth-child(1) {
			display:block;
			background: url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/sprite.png') no-repeat;
	
			animation: dogLaugh 200ms infinite steps(1) alternate;
		}

		& > span:nth-child(2) {
			display:none;
			background: url('https://raw.githubusercontent.com/vaielab/DuckHuntCss/master/sprite.png') no-repeat;
			background-position:-600px -0px;
		}
	}
}







@for $i from 1 through 10 {
	#bc#{$i}-1:checked ~ #shootingArea > div:nth-child(#{$i}) > div > label:nth-child(1), 
	#bc#{$i}-1:checked ~ #shootingArea > div:nth-child(#{$i}) > div > div > label, 
	#bc#{$i}-1:checked ~ #bullets div > div:nth-child(#{$i}) > span:nth-child(3) { display:none; } 
	#bc#{$i}-1:checked ~ #shootingArea > div:nth-child(#{$i}) > div > div > span { display: block; }
	#bc#{$i}-2:checked ~ #shootingArea > div:nth-child(#{$i}) > div > label:nth-child(2), 
	#bc#{$i}-2:checked ~ #bullets div > div:nth-child(#{$i}) > span:nth-child(2) { display:none; }
	#bc#{$i}-3:checked ~ #shootingArea > div:nth-child(#{$i}) > div > label:nth-child(3), 
	#bc#{$i}-3:checked ~ #bullets div > div:nth-child(#{$i}) > span:nth-child(1) { display:none; }
		


	#shootingArea > div:nth-child(#{$i}) > div > div {
		position:absolute;
		left:-100px;
		top:0;
		width:70px;
		height:76px;
	}

	#d#{$i}:checked ~ #points .pts#{$i} {
		left: -142px;	
	}

	#d#{$i}:checked ~ #shootingArea > div:nth-child(#{$i}) label {
		display:none;
	}

	#d#{$i}:checked ~ #shootingArea > div:nth-child(#{$i}) > div > div > span {	
		animation: duckFall 500ms linear forwards;
		background-position:-65px -460px;
		display:block;
	}

	#d#{$i}:checked ~ #shootingArea > div:nth-child(#{$i}) > div > div {
		animation-play-state:paused;
	}

	#d#{$i}:checked ~ #dogLaugh > div:nth-child(#{$i}) > span:nth-child(1) {
		display:none;	
	}

	#d#{$i}:checked ~ #dogLaugh > div:nth-child(#{$i}) > span:nth-child(2) {
		display:block;	
	}

	#d#{$i}:checked ~ #hits > div > span:nth-child(#{$i}) {
		background-position: -25px -557px;	
	}

}



#dogIntro { 	
	animation: dogMove 2.8s linear forwards, dogWalk 4s step-start 1 forwards;
}

$timer: 5;
@for $i from 1 through 10 {
	
	#shootingArea > div:nth-child(#{$i}), 
	#bullets > div > div:nth-child(#{$i}) {
		animation: lvlStart 1ms steps(1) #{$timer}s forwards, lvlEnd 1ms steps(1) #{$timer + 9}s forwards;

	}

	#shootingArea > div:nth-child(#{$i}) > div > div {
		animation: duck#{$i} 5s linear #{$timer}s forwards;

	}

	#dogLaugh > div:nth-child(#{$i}) {
		animation: dogShow 4s #{10 + (($i - 1) * 9)}s;
	}

	$timer: $timer + 9;

}
!

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