@media only screen and (min-width: 640px) {
#bk_image { float:left; width:106%; height:105%; margin-left:-2%;  }
#floor {transform: perspective(1800px) rotateX(45deg) rotateY(4deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
#floor {transform: perspective(1800px) rotateX(45deg) rotateY(4deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor {transform: perspective(1800px) rotateX(45deg) rotateY(4deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor {transform: perspective(1800px) rotateX(45deg) rotateY(4deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {transform: perspective(1800px) rotateX(45deg) rotateY(4deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {transform: perspective(1800px) rotateX(45deg) rotateY(4deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%;  margin-left:-2%; }
#floor {transform: perspective(1800px) rotateX(41deg) rotateY(-2deg) rotateZ(32deg) skewX(-7deg) skewY(-14deg);width:72%;margin-top:-16%;margin-left:23.7%; }
}