Fixes #14068: Update docs note for inline forms

docs/_includes/css/forms.html

@@ -49,17 +49,17 @@
   <button type="submit" class="btn btn-default">Submit</button>
 </form>
 {% endhighlight %}
-    <div class="bs-callout bs-callout-warning">
-      <h4>Don't mix form groups with input groups</h4>
-      <p>Do not mix form groups directly with <a href="/components/#input-groups">input groups</a>. Instead, nest the input group inside of the form group.</p>
-    </div>
+  <div class="bs-callout bs-callout-warning">
+    <h4>Don't mix form groups with input groups</h4>
+    <p>Do not mix form groups directly with <a href="/components/#input-groups">input groups</a>. Instead, nest the input group inside of the form group.</p>
+  </div>
 
 
   <h2 id="forms-inline">Inline form</h2>
   <p>Add <code>.form-inline</code> to your <code>&lt;form&gt;</code> for left-aligned and inline-block controls. <strong>This only applies to forms within viewports that are at least 768px wide.</strong></p>
   <div class="bs-callout bs-callout-danger">
     <h4>Requires custom widths</h4>
-    <p>Inputs, selects, and textareas are 100% wide by default in Bootstrap. To use the inline form, you'll have to set a width on the form controls used within.</p>
+    <p>Inputs and selects have <code>width: 100%;</code> applied by default in Bootstrap. Within inline forms, we reset that to <code>width: auto;</code> so multiple controls can reside on the same line. Depending on your layout, additional custom widths may be required.</p>
   </div>
   <div class="bs-callout bs-callout-warning">
     <h4>Always add labels</h4>