Fixed minor typos in css.html

css.html

@@ -1466,7 +1466,7 @@ For example, <code>&lt;section&gt;</code> should be wrapped as inline.
 
     <div class="bs-callout bs-callout-danger">
       <h4>Cross-browser compatibility</h4>
-      <p>While Bootstrap will apply these styles in all browsers, IE and Safari don't actually support the <code>&lt;disabled&gt;</code> attribute on a <code>&lt;fieldset&gt;</code>. Use custom JavaScript to disable the fieldset in these browsers.</p>
+      <p>While Bootstrap will apply these styles in all browsers, IE and Safari don't actually support the <code>disabled</code> attribute on a <code>&lt;fieldset&gt;</code>. Use custom JavaScript to disable the fieldset in these browsers.</p>
     </div>
 
     <form class="bs-example form-inline">
@@ -1534,7 +1534,7 @@ For example, <code>&lt;section&gt;</code> should be wrapped as inline.
 
 
     <h2 id="forms-input-groups">Input groups</h3>
-    <p>Add text or buttons before, after, or on both sides of any text-based input. Use <code>.input-group</code> with an <code>.add-on</code> to prepend or append elements to an <code>&lt;input&gt;</code>.</p>
+    <p>Add text or buttons before, after, or on both sides of any text-based input. Use <code>.input-group</code> with an <code>.input-group-addon</code> to prepend or append elements to an <code>&lt;input&gt;</code>.</p>
 
     <div class="bs-callout bs-callout-danger">
       <h4>Cross-browser compatibility</h4>