Merge branch 'feat-enhance-option-ui'

Author: wdhongtw

options.css

@@ -56,3 +56,7 @@ button {
     border-color: var(--line-color);
     color: var(--main-color);
 }
+
+input {
+    font-family: monospace;
+}

options.html

@@ -27,6 +27,8 @@ <h2>Options</h2>
             <div id="buttons-wrapper">
                 <span class="hidden"></span>
                 <button id="add-button">Add</button>
+                <button class="hidden">Dummy</button>
+                <button class="hidden">Dummy</button>
                 <button id="load-defaults-button">Reset</button>
                 <button id="save-button">Save</button>
                 <span id="saved-notification" class="hidden">Saved</span>