fix example thumbs

docs/examples/index.md

@@ -9,31 +9,31 @@ Examples that focus on implementing uses of built-in components provided by Boot
 
 <div class="row bd-examples">
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/starter-template/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/starter-template.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/starter-template/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/starter-template.jpg" alt="">
     </a>
     <h4>Starter template</h4>
     <p>Nothing but the basics: compiled CSS and JavaScript.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/grid/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/grid.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/grid/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/grid.jpg" alt="">
     </a>
     <h4>Grids</h4>
     <p>Multiple examples of grid layouts with all four tiers, nesting, and more.</p>
   </div>
-  <div class="clearfix visible-xs-block"></div>
+  <div class="clearfix hidden-sm-up"></div>
 
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/jumbotron/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/jumbotron.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/jumbotron/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/jumbotron.jpg" alt="">
     </a>
     <h4>Jumbotron</h4>
     <p>Build around the jumbotron with a navbar and some basic grid columns.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/jumbotron-narrow/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/jumbotron-narrow.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/jumbotron-narrow/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/jumbotron-narrow.jpg" alt="">
     </a>
     <h4>Narrow jumbotron</h4>
     <p>Build a more custom page by narrowing the default container and jumbotron.</p>
@@ -46,24 +46,24 @@ Taking the default navbar component and showing how it can be moved, placed, and
 
 <div class="row bd-examples">
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/navbar/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/navbar.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/navbar/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/navbar.jpg" alt="">
     </a>
     <h4>Navbar</h4>
     <p>Super basic template that includes the navbar along with some additional content.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/navbar-top/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/navbar-static.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/navbar-top/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/navbar-static.jpg" alt="">
     </a>
     <h4>Static top navbar</h4>
     <p>Super basic template with a static top navbar along with some additional content.</p>
   </div>
-  <div class="clearfix visible-xs-block"></div>
+  <div class="clearfix hidden-sm-up"></div>
 
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/navbar-top-fixed/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/navbar-fixed.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/navbar-top-fixed/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/navbar-fixed.jpg" alt="">
     </a>
     <h4>Fixed navbar</h4>
     <p>Super basic template with a fixed top navbar along with some additional content.</p>
@@ -76,63 +76,63 @@ Brand new components and templates to help folks quickly get started with Bootst
 
 <div class="row bd-examples">
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/cover/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/cover.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/cover/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/cover.jpg" alt="">
     </a>
     <h4>Cover</h4>
     <p>A one-page template for building simple and beautiful home pages.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/carousel/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/carousel.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/carousel/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/carousel.jpg" alt="">
     </a>
     <h4>Carousel</h4>
     <p>Customize the navbar and carousel, then add some new components.</p>
   </div>
-  <div class="clearfix visible-xs-block"></div>
+  <div class="clearfix hidden-sm-up"></div>
 
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/blog/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/blog.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/blog/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/blog.jpg" alt="">
     </a>
     <h4>Blog</h4>
     <p>Simple two-column blog layout with custom navigation, header, and type.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/dashboard/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/dashboard.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/dashboard/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/dashboard.jpg" alt="">
     </a>
     <h4>Dashboard</h4>
     <p>Basic structure for a admin dashboard with fixed sidebar and navbar.</p>
   </div>
-  <div class="clearfix visible-xs-block"></div>
+  <div class="clearfix hidden-sm-up"></div>
 
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/signin/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/sign-in.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/signin/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/sign-in.jpg" alt="">
     </a>
     <h4>Sign-in page</h4>
     <p>Custom form layout and design for a simple sign in form.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/justified-nav/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/justified-nav.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/justified-nav/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/justified-nav.jpg" alt="">
     </a>
     <h4>Justified nav</h4>
     <p>Create a custom navbar with justified links. Heads up! <a href="{{ site.baseurl }}components/#nav-justified">Not too Safari friendly.</a></p>
   </div>
-  <div class="clearfix visible-xs-block"></div>
+  <div class="clearfix hidden-sm-up"></div>
 
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/sticky-footer/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/sticky-footer.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/sticky-footer/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/sticky-footer.jpg" alt="">
     </a>
     <h4>Sticky footer</h4>
     <p>Attach a footer to the bottom of the viewport when the content is shorter than it.</p>
   </div>
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/sticky-footer-navbar/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/sticky-footer-navbar.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/sticky-footer-navbar/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/sticky-footer-navbar.jpg" alt="">
     </a>
     <h4>Sticky footer with navbar</h4>
     <p>Attach a footer to the bottom of the viewport with a fixed navbar at the top.</p>
@@ -145,8 +145,8 @@ Examples that focus on future-friendly features or techniques.
 
 <div class="row bd-examples">
   <div class="col-xs-6 col-md-4">
-    <a href="{{ site.baseurl }}examples/offcanvas/">
-      <img class="img-thumbnail" src="{{ site.baseurl }}examples/screenshots/offcanvas.jpg" alt="">
+    <a href="{{ site.baseurl }}/examples/offcanvas/">
+      <img class="img-thumbnail" src="{{ site.baseurl }}/examples/screenshots/offcanvas.jpg" alt="">
     </a>
     <h4>Offcanvas</h4>
     <p>Build a toggleable off-canvas navigation menu for use with Bootstrap.</p>