body {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
    height: 95vh;
    margin: 0;
    font-family: Arial, sans-serif;
}

#output {
    cursor: pointer;
    text-align: center;
    align-content: center;
    font-size: 30px;
    bottom: 80%;
    left: 21%;
    width: 60vw;
    border: 4px solid black;
    height: 10vh;
    box-shadow: 0px 8px 12px gray;
    border-radius: 10px;
}

.keyboard {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.row {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.key {
    width: 50px;
    height: 50px;
    background: black;
    color: white;
    font-size: 18px;
    font-weight: bold;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
    line-height: 50px;
    box-shadow: 0 2px gray;
}

.key:hover {
    background: #333;
}

.key:active {
    transform: translateY(3px);
    box-shadow: none;
}

.spacer {
    width: 30px;
    height: 50px;
    visibility: hidden;
}