diff --git a/src/css/easymde.css b/src/css/easymde.css
index d7a3249..c1bbe4b 100644
--- a/src/css/easymde.css
+++ b/src/css/easymde.css
@@ -15,7 +15,7 @@
 .EasyMDEContainer .CodeMirror {
     box-sizing: border-box;
     height: auto;
-    border: 1px solid #ddd;
+    border: 1px solid #ced4da;
     border-bottom-left-radius: 4px;
     border-bottom-right-radius: 4px;
     padding: 10px;
@@ -68,9 +68,9 @@
     -o-user-select: none;
     user-select: none;
     padding: 9px 10px;
-    border-top: 1px solid #bbb;
-    border-left: 1px solid #bbb;
-    border-right: 1px solid #bbb;
+    border-top: 1px solid #ced4da;
+    border-left: 1px solid #ced4da;
+    border-right: 1px solid #ced4da;
     border-top-left-radius: 4px;
     border-top-right-radius: 4px;
 }