adjust button

Author: huiping192

templates/index.html

@@ -11,12 +11,13 @@
     <div class="container">
         <h1 class="mt-5">Bitrate Graph Generator</h1>
         <form method="POST" class="mt-4">
-            <div class="form-group">
-                <label for="video_url">Video URL</label>
-                <input type="text" class="form-control" name="video_url" id="video_url" placeholder="Enter video URL">
+            <div class="input-group">
+              <input type="text" class="form-control" name="video_url" id="video_url" placeholder="Enter video URL">
+              <div class="input-group-append">
+                <button type="submit" class="btn btn-primary">Submit</button>
+              </div>
             </div>
-            <button type="submit" class="btn btn-primary">Submit</button>
-        </form>
+          </form>
 
         <div class="row">
             <div class="col-md-6">