.modal-footer {  
 border-top: 0px;
}

body { 
  background: url(../img/fundo_com_blur.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

.caixa
{
	background-color: white;
	clear: both;
	border-radius: 10px;
	padding: 50px;
	margin: 50px;
}