fixes #9622: reset to inline-block for img-thumbnail, but keep block for .thumbnail > img

assets/css/docs.css

@@ -437,6 +437,13 @@ body {
   margin: 0;
 }
 
+/* Images */
+.bs-example > .img-circle,
+.bs-example > .img-rounded,
+.bs-example > .img-thumbnail {
+  margin: 5px;
+}
+
 /* Buttons */
 .bs-example > .btn,
 .bs-example > .btn-group {

dist/css/bootstrap.css

@@ -4592,13 +4592,18 @@ button.close {
   display: block;
 }
 
-.thumbnail > img,
-.img-thumbnail {
+.thumbnail > img {
   display: block;
   height: auto;
   max-width: 100%;
 }
 
+.img-thumbnail {
+  display: inline-block;
+  height: auto;
+  max-width: 100%;
+}
+
 a.thumbnail:hover,
 a.thumbnail:focus {
   border-color: #428bca;

less/thumbnails.less

@@ -20,10 +20,12 @@
 .thumbnail {
   display: block;
 }
-.thumbnail > img,
-.img-thumbnail {
+.thumbnail > img {
   .img-responsive();
 }
+.img-thumbnail {
+  .img-responsive(inline-block);
+}
 
 // Add a hover state for linked versions only
 a.thumbnail:hover,