Fix images not being shown in a correct dimension

Author: maartentibau

.gitignore

@@ -11,4 +11,8 @@
 # misc
 .DS_Store
 
-npm-debug.log*
+npm-debug.log*
+
+# ide and editors
+.idea
+.vscode

src/css/custom.css

@@ -50,6 +50,10 @@ a {
   color: #6d74c5;
 }
 
+img {
+  height: auto;
+}
+
 .badges {
   margin: 2em 0;
   display: flex;