/* calculator container */
#calculator {
    max-width: 420px;
    margin: 40px auto;
    background: black;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px #000;
    /* could possibly add a border... mabye */
}


/* the screen/display box */
#display {
    width: 100%;
    font-size: 1.4em;
    padding: 10px;
    margin-bottom: 10px;
    text-align: right;

    background: #222;
    color: white;
    
    box-sizing: border-box;
    border: 2px solid #444;
    border-radius: 5px;
}


/* grid layout for buttons */
.button-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);  /* columnss :) */
    gap: 5px;
}


/* buttons */
button {
    padding: 15px;
    font-size: 1em;
    border: none;
    border-radius: 5px;
    background: white;
    color: black;
    cursor: pointer;
    /* font-family inherited */
}

button:hover {
    background: #ddd;
}