@media only screen and (min-width: 640px) {
	#bk_image { float:left; width:103%; height:105%; margin-left:-2%;  }
	#floor { width:129%;transform: perspective(1820px) rotateX(73.9deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg);  }
	.floor_img25 { width:8.4%; } 
}
@media only screen and (min-width: 800px) {
	#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
	#floor { width:95%; transform: perspective(1820px) rotateX(73.9deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg); }
	.floor_img25 { width:9%; } 
}
@media only screen and (min-width: 960px) {
	#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
	#floor { width:103%;transform: perspective(1820px) rotateX(73.9deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg);  }
	.floor_img25 { width:9%; } 
}
@media only screen and (min-width: 1024px) {	
	#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
	#floor { width:100%; transform: perspective(1820px) rotateX(73.9deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg); }
	.floor_img25 { width:8.9%; } 
}
@media only screen and (min-width: 1280px) {
	#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
	#floor { width:95%;transform: perspective(1820px) rotateX(73.9deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg);  }
	.floor_img25 { width:9%; } 
}
@media only screen and (min-width: 1824px) {
	#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
	#floor { width:95%;transform: perspective(1820px) rotateX(73.9deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg); }
	.floor_img25 { width:9%; } 
}
@media only screen and (min-width: 2560px) {
	#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
	#floor { width:96%;transform: perspective(1820px) rotateX(61deg) rotateY(3deg) rotateZ(41deg) skewX(-1deg) skewY(-9deg); }
	.floor_img25 { width:9%; } 
}