functle

@@ -58,6 +58,11 @@ function shakeRow(row) {

     row.classList.add("shake");

 }

+function inputting() {

+    const focus = document.activeElement.tagName.toLowerCase();

+    return focus == "textarea" || focus == "input";

+}

+

 for (let i = 0; i < maxGuesses; i++) {

     const tr = document.createElement("tr");

     for (let j = 0; j < tl; j++) {

@@ -70,6 +75,13 @@ for (let i = 0; i < maxGuesses; i++) {

 let currentRow = 0;

 let currentInput = [];

+// https://stackoverflow.com/a/8563788 for a quirk of Firefox

+document.addEventListener("keydown", e => {

+    if (!inputting() && e.key == "/") {

+        e.preventDefault();

+    }

+});

+

 document.addEventListener("keyup", e => {

     const row = grid.rows[currentRow];

     if (e.key === "Backspace") {