@media only screen and (min-width: 640px) {
#bk_image { float:left; width:107%; height:105%;  margin-left:-2%; }
#floor { width:99%; margin-left:-4.6%;margin-top:-4.1%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg);  }
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%; margin-left:-2%;  }
#floor { width:94%; margin-left:-3.6%;margin-top:-4.1%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg);}
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor { width:94%; margin-left:-3.6%;margin-top:-4.1%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg); }
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor { width:98%; margin-left:-3.6%;margin-top:-4.1%; transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg); }
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:94%; margin-left:-3.6%;margin-top:-4.1%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg); }
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:94%; margin-left:-3.6%;margin-top:-4.1%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg);  }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:94%; margin-left:-3.6%;margin-top:-5.1%;transform: perspective(1820px) rotateX(40deg) rotateY(1deg) rotateZ(49deg) skewX(-4deg) skewY(-11deg);  }
}