.obligatorio {
	color: red;
	font-size: 20px;
}
input:focus,
textarea:focus {
  /* Destacado adicional para elementos que tienen el cursor */
 
  outline: red 2px solid;
}
form li{
    list-style-type: none;
	margin: 10px;
}
button {
	border: none;
	margin: 10px;
	padding: 10px;
	color: white;
	border-radius: 3px;
	cursor: pointer;
    background-color: red;
}
button[type="reset"]{
    background-color: aqua;
    color:black
}
header{
	display: grid;
	grid-template-columns: 140px auto;
	background-color: lightgray;
	padding: 20px 10px;
}
img {
	width: 100%;
	height: auto;
}
main {
	width: 768px;
	margin: auto;
}
#subtitulo {
	display: grid;
	grid-template-areas:
	 "subtitulo subtitulo subtitulo" 
	 "datos preferencias suscripcion";
}
h1{
	color: red;
	text-align: center;
	font-size: 45px;
}
h2 {
	grid-area: subtitulo;
	text-align: center;
}
	
h3 {
	text-align: center;
	display: flex;
	flex-direction: column;
	align-items: center;
}


h3:nth-child(2) {
	grid-area: datos;
}
h3:nth-child(2)::before {
	content: '1';
	display: flex;
	background-color: red;
	color: white;
	width: 50px;
	height: 50px;
	border-radius: 50%;
	font-size: 25px;
	font-family: Arial, Helvetica, sans-serif;
	justify-content: center;
	align-items: center;
}
h3:nth-child(3)::before {
	content: '2';
	
}
h3:nth-child(4)::before {
	content: '3';
	
}
h3::before, legend::before {
	display: flex;
	background-color: red;
	color: white;
	width: 50px;
	height: 50px;
	border-radius: 50%;
	font-size: 25px;
	font-family: Arial, Helvetica, sans-serif;
	justify-content: center;
	align-items: center;
}
h3:nth-child(2)::before, #datos legend::before{
	content: '1';
}
h3:nth-child(3)::before, #preferencias legend::before{
	content: '2';
}
h3:nth-child(4)::before, #seleccion legend::before{
	content: '3';
}