body {
    margin: 0;
    background-color: black;
    color: lime;
    font-family: monospace;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    height: 100vh;
    overflow: hidden;
}
.dot-matrix {
    /* font-size is now controlled by child elements */
    text-align: center;
    margin-top: 60px;
    /* Use Flexbox for side-by-side alignment */
    display: flex;
    justify-content: center; /* Center content horizontally */
    align-items: center;     /* Align content vertically */
    gap: 10px;               /* Creates space between the squares */
}
.display-square {
    width: 50px;
    height: 120px;
    border: 3px solid rgb(5, 5, 5);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 6em;
    line-height: 1;
}
#buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 20px;
}
#buttons button {
    font-size: 2em;
    margin: 5px;
    width: 60px;
    height: 60px;
    background-color: #222;
    color: lime;
    border: 2px solid lime;
    border-radius: 10px;
    margin-bottom: 60px;
}
#buttons button.active {
    background-color: green;
}