button {
    /* styled to look like <a href...> */
    background-color: transparent;
    font-size: inherit;
    font-family: inherit;
    font-weight: bold;
    border-width: 0px;
    color: #993399;
    padding: 0px;
}
button:hover { text-decoration: underline; }
button:disabled { text-decoration: none; }

.maze55-grid {
    display: grid;
    background-color: darkgray;
    grid-template-columns: repeat(5, 1fr);
    grid-gap: 4px;
    padding: 4px;
}
.maze46-grid {
    display: grid;
    background-color: gainsboro;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 2px;
    padding: 0px;
}
.compass-grid {
    display: grid;
    background-color: white;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 5px;
    padding: 5px;
}

.selected { background-color: white; }
.spoiler { display: none; }
.dev-panel { display: none; }

/* disable button-focus on chrome */
*:focus { outline: none; }