/* Styles of tool: Reversi / Othello Game */
.rv-wrap{text-align:center}
.rv-board{display:inline-grid;grid-template-columns:repeat(8,1fr);gap:2px;background:#1f7a1f;padding:6px;border-radius:8px}
.tool-box .rv-cell{width:42px;height:42px;padding:0!important;background:#2e9e2e!important;border:0!important;border-radius:4px!important;display:flex;align-items:center;justify-content:center}
.tool-box .rv-cell.can{background:#3bb53b!important}
.rv-disc{width:80%;height:80%;border-radius:50%;box-shadow:0 1px 3px rgba(0,0,0,.4)}
.rv-disc.blk{background:#1b2b4d}.rv-disc.wht{background:#f3f4f6}
.rv-dot{width:14px;height:14px;border-radius:50%;background:rgba(255,255,255,.45)}
#rv-msg{text-align:center}
@media(max-width:480px){.tool-box .rv-cell{width:36px;height:36px}}