formulario.css

main {
width: 940px;
margin: 0 auto;
}

form label {
margin: 40px 0;
}

form label {
display: block;
font-size: 20px; 
margin: 0 0 10px;

}

form input {
display: block;
margin: 0 0 10px;
padding: 10px 25px;
width: 50%;

}