PhaserEditor2D-v3/source/editor/plugins/phasereditor2d.pack/styles/AssetPackEditor.css

table.TilemapTable {
    width: 100%;
}

.TilemapTable th {
    text-align: left;
}

.TilemapTable th,
.TilemapTable td {
    padding: 0.5em;
    word-break: break-all;
    min-width: 6em;
}