grunt css

dist/css/bootstrap.css

@@ -314,13 +314,9 @@ a:focus {
 }
 
 img {
-  vertical-align: middle;
-}
-
-.img-responsive, .carousel-inner > .carousel-item > img, .carousel-inner > .carousel-item > a > img {
-  display: block;
   max-width: 100%;
   height: auto;
+  vertical-align: middle;
 }
 
 .img-rounded {
@@ -328,9 +324,6 @@ img {
 }
 
 .img-thumbnail {
-  display: inline-block;
-  max-width: 100%;
-  height: auto; 
   padding: .25rem;
   line-height: 1.5;
   background-color: #fff;