diff --git a/public/index.html b/public/index.html
index 040da3b..9a67e84 100644
--- a/public/index.html
+++ b/public/index.html
@@ -66,7 +66,7 @@
      <div class="is-test" style="display:none;position: fixed;
      border: solid 10px red;
      width: calc(100% - 20px);
-     height: 100%;
+     height:calc(100% - 20px);
      top: 0px;
      left: 0px;" id="divTest">
       <div style="font-size: 40px;