*{
    margin: 0px;
    padding: 0px;
}

div.fundo{
    background-image: linear-gradient(45deg, black,rgb(0, 140, 255));
    height: 100vh;
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    padding: 30px;
}

a{
    color: rgb(255, 136, 0);
}
a:hover{
    color: white;
    background-color: blue;
}

div.calculadora{
    position: absolute;
    background-color: rgba(0, 0, 0, 0.800);
    top: 50%;
    left: 50%;
    transform: translate(-50%,-25%);
    border-radius: 10px;
    padding: 15px;
}

button.botao{
    background-color: gray;
    width: 60px;
    height: 60px;
    font-size: 25px;
    cursor: pointer;
    border: none;
    color: white;
    margin: 3px;
}

button.botao:hover{
    background-color: black;
}

p#resultado{
    width: 252px;
    height: 40px;
    margin: 5px;
    background-color: white;
    font-size: 25px;
    color: black;
    text-align: right;
    padding: 5px;
}