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HTML 

              
                <div class="ufo">
	<div class="lano1"></div>
	<div class="lano2"></div>
	<div class="lano3"></div>
	<div class="lano4"></div>
	<div class="mostovka"></div>
	<div class="podperaX"></div>
	<div class="podperaY"></div>
	<div class="parallelo"></div>
	<div class="paralleloPoschodie"></div>
	<div class="polgulaUp"></div>
	<div class="polgulaDown"></div>
	<table class="okna">
		<tr><td></td><td></td><td></td><td></td><td></td><td></td></tr>
	</table>

</div>
!

CSS 

              
                @import compass

$w: 520px
$h: 3/4 *$w

$betonColor: #666
$lanoColor: darken($betonColor, 3%)
$mostovkaColor: darken($betonColor, 8%)
$polgulaColor: darken($betonColor, 6%)

$nasobic : 1.3

$wCesta: $w * $nasobic
$hCesta: 0.05*$h * $nasobic
$wParallelo: 0.029*$w * $nasobic
$hParallelo: 0.04*$h * $nasobic

$wPolgulaDown: 0.20*$w * $nasobic
$hPolgulaDown: 0.024*$h * $nasobic
$hOkna: $hPolgulaDown

$stredTanierX: 0.15 * $w
$stredTanierY: 0.2 * $h
$wPolgula: (0.20 * $w) * $nasobic
$hPolgula: (0.03 * $h + $hOkna) * $nasobic

$stredLanaY: $stredTanierY + 0.1*$h
$stredLanaX: $stredTanierX

$wLano1: 0.008 * $w
$wLano2: $wLano1
$wLano3: $wLano2
$wLano4: $wLano3

$hLano1: 1.25 * $h
$hLano2: 0.98 * $h
$hLano3: 0.76 * $h
$hLano4: 0.64 * $h

$wPodpera: 0.03*$w * $nasobic

=rotate( $val: -2deg )
	-webkit-transform: rotate($val)
	-moz-transform: rotate($val)
	-ms-transform: rotate($val)
	-o-transform: rotate($val)
	transform: rotate($val)
=transform-origin($val)
	-webkit-transform-origin: $val
	-moz-transform-origin: $val
	-ms-transform-origin: $val
	transform-origin: $val
=skew($x:0, $y:0)
	-webkit-transform: skew($x + deg, $y + deg) 
	-moz-transform   : skew($x + deg, $y + deg) 
	-o-transform     : skew($x + deg, $y + deg) 
	-ms-transform    : skew($x + deg, $y + deg) 
	transform        : skew($x + deg, $y + deg) 
=border-top-left-radius($r1, $r2)
	-webkit-border-top-left-radius: $r1 $r2
	border-top-left-radius: $r1 $r2
	background-clip: padding-box
=border-top-right-radius($r1, $r2)
	-webkit-border-top-right-radius: $r1 $r2
	border-top-right-radius: $r1 $r2
	background-clip: padding-box
=border-bottom-left-radius($r1, $r2)
	-webkit-border-bottom-left-radius: $r1 $r2
	border-bottom-left-radius: $r1 $r2
	background-clip: padding-box
=border-bottom-right-radius($r1, $r2) 
	-webkit-border-bottom-right-radius: $r1 $r2
	border-bottom-right-radius: $r1 $r2
	background-clip: padding-box

.basic
	width: 0px
	height: 0px
	overflow: hidden
	position: absolute

.ufo
	width: $w
	height: $h
	overflow: hidden
	position: absolute
	.mostovka
		@extend .basic
		width: $wCesta
		height: $hCesta
		left: 0
		top: 0.9*$h
		background: $mostovkaColor
	.podperaX
		@extend .basic
		+rotate(18deg)
		+transform-origin(top)
		width: $wPodpera
		height: $h
		right: $stredTanierX - ($wPodpera)
		top: $stredTanierY
		background: $betonColor
	.podperaY
		@extend .podperaX
		+rotate(16deg)
	.polgulaUp
		@extend .basic
		top: $stredTanierY - $hPolgula
		right: $stredTanierX - ($wPolgula / 2)
		background: $polgulaColor
		width: $wPolgula
		height: $hPolgula
		+border-top-left-radius(40*$wPolgula,10*$wPolgula)
		+border-top-right-radius(40*$wPolgula,10*$wPolgula)
	.polgulaDown
		@extend .basic
		top: $stredTanierY 
		right: $stredTanierX - ($wPolgulaDown / 2)
		background: $polgulaColor
		width: $wPolgulaDown
		height: $hPolgulaDown
		+border-bottom-left-radius(40*$wPolgula,10*$wPolgula)
		+border-bottom-right-radius(40*$wPolgula,10*$wPolgula)
	.parallelo
		@extend .basic
		+skew(18,0)
		width: $wParallelo
		height: $hParallelo 
		top: $stredTanierY - (1.5*$hPolgula)
		right: $stredTanierX  - ($wPolgula / 4)
		background: $betonColor
	.paralleloPoschodie
		@extend .basic
		width: $wParallelo
		height: $hParallelo
		top: $stredTanierY - (1.5*$hPolgula)
		right: $stredTanierX - ($wPolgulaDown / 6)
		background: $betonColor
	.okna
		background: transparent
		@extend .basic
		width: $wPolgulaDown
		height: $hOkna
		top: $stredTanierY - $hOkna
		right: $stredTanierX - ($wPolgulaDown / 2)
		border-top: 0
		margin-top: 0
		padding-top: 0
		tr
			border-top: 0
			margin-top: 0
			padding-top: 0
		td
			background: yellow
			border-top: 0
			margin-top: 0
			padding-top: 0
	.lano1
		@extend .basic
		top: $stredLanaY
		right: $stredLanaX
		+transform-origin(top)
		width: $wLano1
		height: $hLano1
		background: $lanoColor
		+rotate(60deg)
	.lano2
		@extend .basic
		top: $stredLanaY
		right: $stredLanaX
		+transform-origin(top)
		width: $wLano2
		height: $hLano2
		background: $lanoColor
		+rotate(49deg)
	.lano3
		@extend .basic
		top: $stredLanaY
		right: $stredLanaX
		+transform-origin(top)
		width: $wLano3
		height: $hLano3
		background: $lanoColor
		+rotate(37deg)
	.lano4
		@extend .basic
		top: $stredLanaY
		right: $stredLanaX
		+transform-origin(top)
		width: $wLano4
		height: $hLano4
		background: $lanoColor
		+rotate(-15deg)
!

JS
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