@media only screen and (min-width: 640px) {
	#bk_image { float:left; width:107%; height:105%; margin-left:-2%;  }
	#floor { width:105%; margin-left:-2.3%; margin-top:-6.9%; }
}
@media only screen and (min-width: 800px) {
	#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
	#floor { width:100%; margin-left:-7.3%; margin-top:-8.9%; }
}

@media only screen and (min-width: 960px) {
	#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
	#floor { width:104%; margin-left:-7.3%; margin-top:-8.9%; }
}
@media only screen and (min-width: 1024px) {	
	#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
	#floor { width:104%; margin-left:-4.3%; margin-top:-8.9%; }
}
@media only screen and (min-width: 1280px) {
	#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
	#floor { width:106%; margin-left:-7.3%; margin-top:-8.9%; }
}
@media only screen and (min-width: 1824px) {
	#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
	#floor { width:100%; margin-left:-7.3%; margin-top:-8.9%; }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%;  margin-left:-2%; }
#floor { width:100%; margin-left:-7.3%; margin-top:-8.9%;transform: perspective(1820px) rotateX(52deg) rotateY(-2deg) rotateZ(40deg) skewX(0deg) skewY(0deg); }
}