@media only screen and (min-width: 640px) {
#bk_image { float:left; width:105%; height:105%; margin-left:-2%;  }
#floor {transform: perspective(1820px) rotateX(31deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:90%;margin-left:16.5%;margin-top:1.9%;}	
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
#floor {transform: perspective(1820px) rotateX(31deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:90%;margin-left:16.5%;margin-top:1.9%;}	
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor {transform: perspective(1820px) rotateX(31deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:112%;margin-left:16.5%;margin-top:1.9%;}	
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor {transform: perspective(1820px) rotateX(31deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:90%;margin-left:16.5%;margin-top:1.9%;}	
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {transform: perspective(1820px) rotateX(31deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:112%;margin-left:16.5%;margin-top:1.9%;}	
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {transform: perspective(1820px) rotateX(31deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:90%;margin-left:16.5%;margin-top:1.9%;}
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {transform: perspective(1820px) rotateX(11deg) rotateY(1deg) rotateZ(55deg) skewX(0deg) skewY(-13deg);width:112%;margin-left:16.5%;margin-top:1.9%;}
}