@media only screen and (min-width: 640px) {
#bk_image { float:left; width:106%; height:105%; margin-left:-2%;  }
#floor { width:95%; margin-left:11%; margin-top:-0.3%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg); }
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%;margin-left:-2%;   }
#floor { width:90%; margin-left:14%; margin-top:-0.3%; transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg);}
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor { width:90%; margin-left:14%; margin-top:-0.3%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg); }
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor { width:92%; margin-left:12%; margin-top:-0.3%; transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg);}
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:90%; margin-left:14%; margin-top:-0.3%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg); }
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:90%; margin-left:14%; margin-top:-0.3%;transform: perspective(1820px) rotateX(54deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg); }
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:96%; margin-left:-2%;  }
#floor { width:98%; margin-left:9%; margin-top:-0.3%;transform: perspective(1820px) rotateX(45deg) rotateY(1deg) rotateZ(49deg) skewX(3deg) skewY(-8deg); }
}