html,body{height: 100%;overflow-x: hidden;margin: 0;}

section{
	width:100%;
	height:100%;
  min-height:1170px;
  background:url(../imagens/bg.jpg) center center no-repeat;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

@media (min-width: 340px) and (max-width:768px){
section{
  width:100%;
  height:100%;
  min-height:100%;
} 
}

@media (min-width: 992px){}
@media (min-width: 1200px){}