*{
    margin: 0;
    padding: 0;
}

.fundo{
    background-image: linear-gradient(45deg, black, rgb(0, 255, 242));
    height: 100vh;
    color: #fff;
    font-family: arial;
    text-align: center;
}

.calculadora{
    position: absolute;
    background-color: rgba(0, 0, 0, 0.9);
    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;
    margin: 2px;
}

.botao:hover{
    background-color: rgb(0, 0, 0);
}

.igual{
    height: 106px;
}

.zero{
    width: 106px;
}

#resultado{
    background: #fff;
    width: 207px;
    height: 30px;
    margin: 8px;
    font-size: 25px;
    color: #000;
    text-align: right;
    padding: 5px;
}

h1{
    padding: 90px;
    font-size: 35px;
}

h2{
    font-size: 30px;
}

.azul{
    background-color: rgb(26, 158, 182);
}

.vermelho{
    background-color: red;
}