diff --git a/src/thsf/static/css/style.css b/src/thsf/static/css/style.css
index 0766544..6488524 100644
--- a/src/thsf/static/css/style.css
+++ b/src/thsf/static/css/style.css
@@ -54,18 +54,10 @@ span.place {
 }
 
 #content_wrapper {
-  background-color: red;
-  position: fixed;
-  top: 0;
-  bottom:0;
   display: flex;
   flex-direction: column;
   justify-content: flex-start;
   align-items: center;
-  width: 100vw; /* viewport width */
-  height: 100vh; /* viewport height */
-  overflow-y: scroll;
-  overflow-x: hidden;
 }
 
 #main_wrapper {
@@ -76,6 +68,12 @@ span.place {
 }
 
 #center_wrapper {
+  background-color: red;
+  position: fixed;
+  top: 0;
+  bottom:0;
+  height: 100vh; /* viewport height */
+  overflow-y: scroll;
   display: flex;
   flex-direction: column;
   justify-content: flex-start;