body, html {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #000;
    color: white;
    font-family: Arial, sans-serif;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    padding-top: 25%;
}

#display-container {
    width: 85%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    text-align-last: left;
    padding-left: 10px;
    margin-bottom: 15px;
    background-color: #222;
    border-radius: 20px;
    padding-right: 0px;
}

#display {
    flex-grow: 1;
    padding: 0px;
    margin: 5px;
    text-align: center;
    font-size: 2em;
}

#delete-btn {
    background-color: #555;
    color: white;
    padding: 5%;
    font-size: 1.5em;
    border: none;
    border-radius: 20px;
    touch-action: manipulation;
}

#keyboard {
    width: 90%;
    max-width: 480px;
}

.row {
    display: flex;
    justify-content: space-between;
}

#keyboard button, .spacer {
    padding: 15px;
    margin: 5px;
    flex: 0 0 30%; /* Buttons take up 30% of the row width */
    font-size: 1.5em;
    border-radius: 20px;
    touch-action: manipulation;
}

#keyboard button {
    background-color: #555;
    color: white;
    border: none;
}

.spacer {
    flex: 0 0 5%; /* Spacers take up 5% of the row width */
    visibility: hidden;
}

#keyboard .wide {
    flex: 0 0 30%; /* This will ensure the '0' button is the same width as the '2', '5', and '8' buttons */
}

/* Media query per gestire layout in