diff --git a/app/assets/stylesheets/extend/bootstrap.scss b/app/assets/stylesheets/extend/bootstrap.scss
index d80adf274..7399d889a 100644
--- a/app/assets/stylesheets/extend/bootstrap.scss
+++ b/app/assets/stylesheets/extend/bootstrap.scss
@@ -121,17 +121,7 @@
 
 .modal-content {
   .modal-header {
-    position: relative;
-    padding: 16px;
-    border-bottom-color: transparent;
-
-    &::after {
-      position: absolute;
-      bottom: 0;
-      left: 16px;
-      border-bottom: 1px solid $color-concrete;
-      width: calc(100% - 2*16px);
-    }
+    padding: 10px 15px;
 
     .modal-title {
       line-height: 25px;
@@ -147,20 +137,6 @@
       }
     }
   }
-
-  .modal-footer {
-    position: relative;
-    padding: 16px;
-    border-top-color: transparent;
-
-    &::after {
-      position: absolute;
-      top: 0;
-      left: 16px;
-      border-top: 1px solid $color-concrete;
-      width: calc(100% - 2*16px);
-    }
-  }
 }