diff --git a/ecs/jskult-webapp/src/static/css/ultStyle.css b/ecs/jskult-webapp/src/static/css/ultStyle.css
index 05951c28..3754f935 100644
--- a/ecs/jskult-webapp/src/static/css/ultStyle.css
+++ b/ecs/jskult-webapp/src/static/css/ultStyle.css
@@ -358,8 +358,12 @@ table{
     width : 10%;
 }
 
+.captionMenteDate{
+    width: 10%;
+}
+
 .menteDate{
-    width: 12%;
+    width: 14%;
 }
 
 .hpAssrtTd{
diff --git a/ecs/jskult-webapp/src/templates/instInfo.html b/ecs/jskult-webapp/src/templates/instInfo.html
index 99570030..2baf88ec 100644
--- a/ecs/jskult-webapp/src/templates/instInfo.html
+++ b/ecs/jskult-webapp/src/templates/instInfo.html
@@ -258,7 +258,7 @@
             <tr>
                 <td class="hpInfoColumn">病床数(定員)</td>
                 <td class="instData"><input type="text" readonly="readonly" value="{{ultmarc.inst_info_data.bed_num or ''}}" class="xSmallTextbox numberBox"></td>
-                <td class="hpInfoColumn">メンテ年月日</td>
+                <td class="hpInfoColumn captionMenteDate">メンテ年月日</td>
                 <td class="instData menteDate"><input type="text" readonly="readonly" value="{{ultmarc.inst_info_data.prmit_bed_maint_ymd or ''}}" class="repreTextbox"></td>
             </tr>
         </tbody>