fix show annoattion

public/self/labeling.html

@@ -524,7 +524,7 @@ ul.region_shape .selected { fill:#ffffff; stroke:#ff0000; }
   
                       <div id="labelwin" width="100%" style="display: flex;justify-content: center;align-content: center;" >
                               <input type="hidden" class="form-control" id="postmessage" >
-                              <div id = "show_region" style="z-index: 50000;position: absolute;width: 0px;height: 0px"></div>
+                              <div id = "show_region" style="z-index: 50000;width: 0px;height: 0px"></div>
                               
                                <canvas id="myCanvas"  style="border:1px solid #5a5a5a;"></canvas>
                               <div id="float_text"></div>