@media only screen and (min-width: 640px) {
#bk_image { float:left; width:105%; height:105%; margin-left:-2%;  }
#floor { transform: perspective(1720px) rotateX(81deg) rotateY(0deg) rotateZ(0deg) skewX(4deg) skewY(0deg); width:79%;  }	
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
#floor { transform: perspective(1720px) rotateX(81deg) rotateY(0deg) rotateZ(0deg) skewX(-2deg) skewY(0deg); width:60%; }	
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor { transform: perspective(1720px) rotateX(81deg) rotateY(0deg) rotateZ(0deg) skewX(-0deg) skewY(0deg); width:65%; }	
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%;margin-left:-2%;   }
#floor { transform: perspective(1720px) rotateX(81deg) rotateY(0deg) rotateZ(0deg) skewX(2deg) skewY(0deg); width:70%; }	
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }	
#floor { transform: perspective(1720px) rotateX(81deg) rotateY(0deg) rotateZ(0deg) skewX(-2deg) skewY(0deg); width:60%;  }
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
#floor { transform: perspective(1720px) rotateX(81deg) rotateY(0deg) rotateZ(0deg) skewX(-2deg) skewY(0deg); width:60%; }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
#floor { transform: perspective(1720px) rotateX(67deg) rotateY(0deg) rotateZ(0deg) skewX(-2deg) skewY(0deg); width:63%; }
}