@media only screen and (min-width: 640px) {
#bk_image { float:left; width:103%; height:94%;margin-left:-2%;   }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-29deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%;margin-left:-2%;   }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-29deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-29deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-29deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-29deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%;  margin-left:-2%; }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-29deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor {transform: perspective(1920px) rotateX(58deg) rotateY(-4deg) rotateZ(74deg) skewX(7deg) skewY(-27deg);width:90%;margin-left:37%;margin-top:-10.3%;}
}