header{
text-align: center;
font-style: bold;
font-optical-sizing: auto;
font-weight: 300;
color: antiquewhite;

}
.introduccion{
    font-size: 20px;
    font-style: italic;
}

body{
    text-align: center;
    background: url(imagenes/fondo.jpg);
    padding: 40px;
}

.cuadros{
    width:940px;
    margin: 0 auto;
    padding: 30px;
}

.cuadros li{
display: inline-block;
text-align: center;

}

.AreaTexto{
width: 300px;
height: 300px;
border-color: yellowgreen;
border-radius: 10px;
}

.mensaje{
    width: 300px;
    height: 300px;
    border-color: yellowgreen;
    border-radius: 10px;
    }

.btn{
    padding: 30px;
    border-radius: 10px;
    
}
.btnEncriptador:hover{
    background-color: yellowgreen;
    padding: 5px;
}

.btnDesencriptador:hover{
    background-color:yellowgreen;
    padding: 5px;
}

.copyright{
    color: yellowgreen;
}