diff --git a/src/scss/styles.scss b/src/scss/styles.scss
index 4551800a57..6b9610d6ce 100644
--- a/src/scss/styles.scss
+++ b/src/scss/styles.scss
@@ -202,6 +202,18 @@ input, select, textarea {
     }
 }
 
+.modal-dialog {
+    width: $modal-md;
+}
+
+.modal-sm {
+    width: $modal-sm;
+}
+
+.modal-lg { 
+    width: $modal-lg;
+}
+
 .modal-body {
     h3 {
         font-weight: normal;