#contenedor-header{
    border-radius: 20px;
    padding: 15px;
    display: flex;
}
#header-titulos{
    letter-spacing: 20px;
    text-align:center;
    width: 200%;
    color: black;
    font-size: x-large;
    font-family:inherit;
}
body{
    text-align: center;
    background: url("../imagenes/fondocalcu.jpg");
    background-repeat: no-repeat;
    background-size: cover;
}
#borde{
    border-style: groove;
    border-color: black;
    border-radius: 40px;
    padding: 30px;
    border-style: solid;
}
#resultado{
    background: white;
    border: green;
    border-style: dashed;
}