add decimal input.

Author: Shreekant-04

ArithemeticGame/index.html

@@ -11,7 +11,12 @@
       <h1>Arithmetic Game</h1>
       <form id="game">
         <p id="problem"></p>
-        <input type="number" id="answer" placeholder="Enter your answer" />
+        <input
+          type="number"
+          id="answer"
+          placeholder="Enter your answer"
+          step="0.01"
+        />
         <button id="submit">Submit</button>
       </form>
       <p id="result"></p>