Add ability to input custom example text

index.html

@@ -30,6 +30,7 @@
         <p>THE FIVE TALL BOXING WIZARDS JUMP QUICKLY!</p>
         <p>0123456789.:,;(*!?')</p>
       </div>
+      <br />
       <div id="previewButtons">
         <div class="flex column">
           <button id="seriousButton">Serious Sans</button>
@@ -45,6 +46,12 @@
         </div>
       </div>
       <br />
+      <form>
+        <label for="newExampleText">New Example Text:</label>
+        <input type="text" id="newExampleText" name="newExampleText" />
+        <input type="button" id="newExampleTextButton" value="Update" />
+      </form>
+      <br />
       <h2>Downloads</h2>
       <div id="downloads">
         <div>