*{
    margin: 0;
    padding: 0;
}


.fundo {
    background-image: linear-gradient(45deg, black, rgb(0, 183, 255));
    height: 100vh;
    color: white;
    font-family: Arial;
    text-align: center;
}

.calculadora {
    position: absolute;
    background-image: linear-gradient(45deg, rgb(0, 183, 255), black);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 15px;
    padding: 15px;
}

.botao {
    width: 50px;
    height: 50px;
    font-size: 25px;
    cursor: pointer;
    background-color: rgb(31, 31, 31);
    border: none;
    color: #fff;
    border-radius: 15px;
}

.botao:hover {
    background-color: rgb(9, 216, 243);
    
}

#resultado {
    background-color: white;
    width: auto;
    height: 30px;
    margin: 5px;
    color: black;
    font-size: 25px;
    text-align: right;
    padding: 5px;
    border-radius: 15px;
}