@media only screen and (min-width: 640px) {
#bk_image { float:left; width:105%; height:105%;margin-left:-2%;   }	
#floor { width:96%; margin-left:-20%; margin-top:-6.3%; transform: perspective(1820px) rotateX(68deg) rotateY(0deg) rotateZ(-37deg) skewX(0deg) skewY(0deg);}
}
@media only screen and (min-width: 800px) {
#bk_image { float:left; width:103%; height:70%;margin-left:-2%;   }
#floor { width:82%; margin-left:-3%; margin-top:-6.3%;transform: perspective(1820px) rotateX(68deg) rotateY(0deg) rotateZ(-37deg) skewX(0deg) skewY(0deg); }
}
@media only screen and (min-width: 960px) {
#bk_image { float:left; width:116%; height:106%; margin-left:-7%;  }
#floor { width:82%; margin-left:-3%; margin-top:-6.3%;transform: perspective(1820px) rotateX(68deg) rotateY(0deg) rotateZ(-37deg) skewX(0deg) skewY(0deg); }
}
@media only screen and (min-width: 1024px) {	
#bk_image { float:left; width:103%; height:67%; margin-left:-2%;  }
#floor { width:88%; margin-left:-8%; margin-top:-6.3%; transform: perspective(1820px) rotateX(68deg) rotateY(0deg) rotateZ(-37deg) skewX(0deg) skewY(0deg);}
}
@media only screen and (min-width: 1280px) {
#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
#floor { width:82%; margin-left:-3%; margin-top:-8.3%;transform: perspective(1820px) rotateX(68deg) rotateY(0deg) rotateZ(-37deg) skewX(0deg) skewY(0deg); }
}
@media only screen and (min-width: 1824px) {
#bk_image { float:left; width:103%; height:103%; margin-left:-2%;  }
#floor { width:82%; margin-left:-3%; margin-top:-6.3%; transform: perspective(1820px) rotateX(68deg) rotateY(0deg) rotateZ(-37deg) skewX(0deg) skewY(0deg);}
}
@media only screen and (min-width: 2560px) {
#bk_image { float:left; width:103%; height:103%;margin-left:-2%;   }
#floor { width:82%; margin-left:1%; margin-top:-6.3%; transform: perspective(1820px) rotateX(56deg) rotateY(0deg) rotateZ(-33deg) skewX(0deg) skewY(0deg);}
}