.keyboard {
    display: grid;
    padding: 1em;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5em;
}
.keyboard>p {
    grid-column: 1 / 7;
    align-self: center;
    justify-content: center;
}
.keyboard>input {
    min-width: 1.4em;
    min-height: 1.4em;
    box-sizing: border-box;
    font-size: 180%;
    text-align: center;
    outline: none;
    border-color: #c822ed;
    border-radius: 0.3em;
}
.keyboard >.key {
    grid-column: span 2;
    font-size: 1.2em;
    border: 1px solid #bdbdbd;
    border-radius: 0.5em;
    background-color: white;
    align-items: center;
    display: flex;
    justify-content: center;
}
.keyboard>.key-0 {
    grid-column: 1 / 5;
}
.keyboard>button {
    grid-column: 1 / 7;
    height: 100%;
    font-size: 1em;
    color: white;
    background-color: #007bff;
    border-radius: 0.5em;
    border-color: #e0e0e0;
}
.keyboard>button:active {
    color: #007bff;
    background-color: white;
}