/* Esto son comentarios en css */
body  {
    background-image: url(fondo.jpg);
    background-image: no-repeat;
    background-image: fixed;
    background-image: center;
    -webkit-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    width: auto; height: auto;
}

h1{
    margin-left: auto;
    margin-right: auto;
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    color:black;
    font-size: 40px;
    font-weight: 400;
    text-align: center;
    background-color: rgba(255, 255, 224, 0.76);
    overflow: hidden;
    padding: 20px;
    border-radius: 35px 0px 35px 0px;
    -moz-border-radius: 35px 0px 35px 0px;
    -webkit-border-radius: 35px 0px 35px 0px;
    border: 2px solid lightyellow;
    padding: 20px;
    width: 500px;
}

p{
    text-align: center;
    font-size: 30px;
    font-weight: 300;
    border-radius: 35px 0px 35px 0px;
    -moz-border-radius: 35px 0px 35px 0px;
    -webkit-border-radius: 35px 0px 35px 0px;
    background-color: rgba(219, 219, 7, 0.76);
}

button{
    margin: 2px;
    padding: 20px 20px;
    font-size: 20px;
    border-radius: 35px 0px 35px 0px;
    -moz-border-radius: 35px 0px 35px 0px;
    -webkit-border-radius: 35px 0px 35px 0px;
    background-color: rgba(219, 219, 7, 0.76);
}

.Calculadora{
    text-align: center;
    background-color:rgba(255, 255, 224, 0.76);
    border: 20px rgba(219, 219, 7, 0.76) ;
    width: auto;
    margin-left: auto;
    margin-right: auto;
    border-radius: 35px 0px 35px 0px;
    -moz-border-radius: 35px 0px 35px 0px;
    -webkit-border-radius: 35px 0px 35px 0px;
    padding: 20px;
    width: 500px;
}