* {
    margin-left: 0.1%;
    margin-right: 0%;
    margin-top: 0.2%;
    margin-bottom: 1%;
    padding: 0%;
    font-family: Arial, Helvetica, sans-serif;
    text-align: justify;
}

body{
    background: lightblue;
    height: 85%;
}

h1{
    color: white;
    background:#2E7EE6;
    width: 73%;
}

main{
    display: inline-block;
    width:90%;
}


#foto1 img{
    width: 25%;
}


#foto3 img{
width: 30%;
}

.galeria{
    box-sizing: border-box;
    display: flex;
    padding: 5px;
  
}


.columna{
    flex: 25%;
    padding: 5px;
}

.columna img{
    width: 100%;
    margin-top: 5px;
}

.btn-flotante {
	font-size: 16px;
	text-transform: uppercase;
	font-weight: bold; 
	color: #ffffff; 
	border-radius: 5px; 
	letter-spacing: 2px;
	background-color:#2E7EE6;
	padding: 18px 30px; 
	position: fixed;
	bottom: 40px;
	right: 40px;
	transition: all 300ms ease 0ms;
	box-shadow: 0px 8px 15px rgba(0, 0, 0, 0.1);
	z-index: 99;
}
.btn-flotante:hover {
	background-color: #000CCE;
	box-shadow: 0px 15px 20px rgba(0, 0, 0, 0.3);
	transform: translateY(-7px);
}
@media only screen and (max-width: 600px) {
 	.btn-flotante {
		font-size: 14px;
		padding: 12px 20px;
		bottom: 20px;
		right: 20px;
	}
} 

#fotodemifuturo{
	width: 100%;
	
}