diff --git a/sass/_vendor.scss b/sass/_vendor.scss
index 06535b9..1aff411 100644
--- a/sass/_vendor.scss
+++ b/sass/_vendor.scss
@@ -19,6 +19,11 @@ h1, h2, h3, h4, h5, h6 {
   line-height: 1.3em
 }
 
+img {
+  max-width: 100%;
+  height: auto;
+}
+
 fieldset {
   border: none;
   padding: 0;