.zona{
	margin-left: 0 !important;
	margin-top: 20px;
}

.btn{
	width: 100%;
	margin-right: 50px;
}

.alert{
	opacity: 1;
	-webkit-animation: desaparece 1s;
	-moz-animation: desaparece 1s;
	-o-animation: desaparece 1s;
	animation: desaparece 1s;
}

.footer{
	margin-top: 50px;
	width: 100%;
}

@-webkit-keyframes-animation: desaparece{
	0%   { opacity: 1; }
  100% { opacity: 0; }
}


@-moz-keyframes-animation: desaparece{
	0%   { opacity: 1; }
  100% { opacity: 0; }
}

@-o-keyframes-animation: desaparece{
	0%   { opacity: 1; }
  100% { opacity: 0; }
}

@keyframes-animation: desaparece{
	0%   { opacity: 1; }
  100% { opacity: 0; }
}