@media only screen and (min-width: 640px) {
	#bk_image { float:left; width:103%; height:105%; margin-left:-2%;  }
	#floor { width:111%; margin-left:24%; margin-top:-8%; }
}
@media only screen and (min-width: 800px) {
	#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
	#floor { width:90%; margin-left:24%; margin-top:-8%; }
}
@media only screen and (min-width: 960px) {
	#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
	#floor { width:100%; margin-left:24%; margin-top:-8%; }
}
@media only screen and (min-width: 1024px) {	
	#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
	#floor { width:96%; margin-left:24%; margin-top:-8%; }
}
@media only screen and (min-width: 1280px) {
	#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
	#floor { width:100%; margin-left:24%; margin-top:-8%; }
}
@media only screen and (min-width: 1824px) {
	#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
	#floor { width:90%; margin-left:24%; margin-top:-8%; }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:90%; margin-left:24%; margin-top:-8%; transform: perspective(1520px) rotateX(60deg) rotateY(1deg) rotateZ(37deg) skewX(0deg) skewY(-11deg);}
}