body {
    background-color: #2D4263;


}

.calculator {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    outline: none;
    margin: 10% 0;

}

.display-box {
    display: block;
    background-color: #1B2430;
    border-radius: 0.3rem;
    height: 50px;
    width: 300px;
    color: white;
    font-family: sans-serif;
    font-size: 1.5rem;
    border: none;
}



.calculator-keys {

    background-color: #1B2430;
    width: 300px;
    height: 320px;
    border-radius: 0.3rem;
    color: black;
    padding: 1rem 0.7rem 1rem 1rem;

}

button {
    width: 60px;
    height: 45px;
    border-radius: 0.3rem;
    font-family: sans-serif;
    font-weight: bolder;
    border: none;
    background-color: rgb(251, 250, 250);
}

.del {
    background-color: #6E85B2;
    color: white;
}

.reset {
    width: 128px;
    color: white;
    background-color: #6E85B2;

}

.equal {
    width: 128px;
    color: white;
    background-color: #C84B31;
}

@media screen and (max-width: 580px) {
    .calculator {
        margin: 15% 0;
    }
    
    .display-box {
        width: 220px;
    }

    .calculator-keys {
        width: 225px;
        height: 300px;

    }

    button {
        width: 44px;
        height: 44px;
    }

    .reset {
        width: 96px;
    }

    .equal {
        width: 96px;
    }
}

.attribution {
    font-size: 11px;
    text-align: center;
}

.attribution a {
    color: hsl(225, 100%, 3%);
}