*{
    margin: 0;
    padding: 0;

}

.fundo{
    background-image: linear-gradient(45deg,purple, crimson);
    height: 100vh;
    color: rgb(255, 255, 255);
    font-family: sans-serif;
    text-align: center;
    
}

.fundo>h1{
    font-size: 25px;
}

.calculadora{
    position: absolute;
    background-color: rgba(0, 0, 0, 0.7);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 15px;
    padding: 15px;
    color: #fff;
    
}

.btn {
    width: 50px;
    height: 50px;
    font-size: 25px;
    cursor: pointer;
    margin: 3px;
    background-color: rgb(31, 31, 31) ;
    border: 0px;
    color: #fff;
    border-radius:3px;
}
.btn:hover{
    background-color: black;
}

.resultado{
    display: flex;
    align-items: center;
    flex-direction: row-reverse;
    width: 225px;
    height: 40px;
    margin: 5px;
    background-color: #fff;
    font-size: 25px;
    color: black;
    border-radius: 5px;
    text-align: right;
    overflow-y: hidden;
    overflow-x: hidden;
    white-space: nowrap;
}