.inicio{
	background-color: #343a40;
}
.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: black;
}
.centrar{
 	position: absolute;
  	top:50%;
  	left:50%;
  	width:400px;
  	margin-left:-200px;
  	margin-top:-150px;
  	padding:5px;
}