@media only screen and (min-width: 640px) {
#bk_image { float:left; width:103%; height:105%; margin-left:-2%;  }	
#floor { width:86%;margin-left:17%;margin-top:-3.3%; }	
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
#floor {width:65%;margin-left:17%;margin-top:-3.3%; }	
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor {width:71%;margin-left:17%;margin-top:-3.3%; }	
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor {width:71%;margin-left:17%;margin-top:-3.3%; }	
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:74%;margin-left:17%;margin-top:-3.3%; }
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {width:65%;margin-left:17%;margin-top:-3.3%; }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {width:65%;margin-left:17%;margin-top:-6.3%; }
}