style.css

.titulo {
  padding: 15px;
  width: 30vw;
  margin: auto;

}

.btn {
  border: 0;
  color: white;
  font-weight: bold;
  background-color: blue;
  padding: 10px;
  margin-top: 10px;
  margin-bottom: 10px;
  border-radius: 0.5em;
}

.text-input {
  border-radius: 0.5em;
  border: 3px solid rgba(0, 0, 0, 0.534);
  display: block;
  font-size: 12px;
  font-weight: bold;
  text-align: center;
  padding: 0.5em;
  width: 25%;
  height: 50px;
  margin-left: auto;
  margin-right: auto;
}

.inserte-letra{
  font-size: 36px;
  font-weight: bold;
  font-family: 'sans-serif';
  text-align: center;
  text-shadow: 1ex;
  color:darkblue;
}

label {
  font-family: 'arial';
  text-align: center;
  font-weight: bold;
  color:rgb(3, 3, 3);
}


.campo-letra {
  border: 3px solid rgba(0, 0, 0, 0.534);
  border-radius: 0.5em;
  font-size: 36px;
  font-family: 'sans-serif';
  text-align: center;
  font-weight: bold;
  display: block;
  padding: 0.5em;
  width: 50px;
  height: 50px;
  margin-left: auto;
  margin-right: auto;
}

.canvas {
  background-color: rgb(230, 224, 224);
  border-radius: 2em;
  border: 6px solid rgba(0, 0, 0, 0.534);
  margin-left: auto;
  margin-right: auto;
}

#mensajes-errores {
	font-family: 'sans-serif';
  text-align: center;
  font-weight: bold;
  color:red;
}

h2 {
  font-family: 'sans-serif';
  text-align: center;
  font-weight: bold;
  color:darkblue;
}

#requisitos-palabra {
  font-family: 'sans-serif';
  text-align: center;
  font-weight: bold;
  color:darkblue;
}

header{
	background-color: rgb(108, 116, 155);
	height: 3em;
	color: #FFF;
	margin-bottom: 1em;
}

header h1{
	font-size: 2em;
	text-align: center;
}

body{
	background-color: rgb(196, 199, 218);
}

#desarrollado {
  font-family: 'arial';
  text-align: right;
  font-weight: bold;
  color:rgb(3, 3, 3);
}