#slider-kab-yuzde-yuz {

background-size: 100% 100%; 
background:#efefef;
margin: 0 auto;
	text-align:center;
background-size: cover;
}

.slider-kab {
position:relative;
margin:0 auto;
text-align:center;
background-size: 100% 100%; 
padding:0;
background-size: cover;
}

.demo_wrapper {
	width: 100%;
	margin: 0 auto;
	text-align:center;
	background-size: cover;
	background-size: 100% 100%; 
}
@media only screen and (max-device-width: 800px), screen and (max-width: 800px) {
  .demo_wrapper {
    width: 80%;
  }  
}
.demo_block {
	width: 100%;
}