Fix heading levels (#26433)

H3 was used without preceding H2, breaking document flow.

diff --git a/docs/4.1/examples/grid/index.html b/docs/4.1/examples/grid/index.html
index 0be50f81639b2e58b21d71f75dfccc29cc75179e..0af25de14257399bd1377d32bd23b94800225eaa 100644 (file)
--- a/docs/4.1/examples/grid/index.html
+++ b/docs/4.1/examples/grid/index.html
@@ -22,7 +22,7 @@
       <h1>Bootstrap grid examples</h1>
       <p class="lead">Basic grid layouts to get you familiar with building within the Bootstrap grid system.</p>
 
-      <h3>Five grid tiers</h3>
+      <h2>Five grid tiers</h2>
       <p>There are five tiers to the Bootstrap grid system, one for each range of devices we support. Each tier starts at a minimum viewport size and automatically applies to the larger devices unless overridden.</p>
 
       <div class="row">
@@ -55,7 +55,7 @@
         <div class="col-xl-4">.col-xl-4</div>
       </div>
 
-      <h3>Three equal columns</h3>
+      <h2>Three equal columns</h2>
       <p>Get three equal-width columns <strong>starting at desktops and scaling to large desktops</strong>. On mobile devices, tablets and below, the columns will automatically stack.</p>
       <div class="row">
         <div class="col-md-4">.col-md-4</div>
@@ -63,7 +63,7 @@
         <div class="col-md-4">.col-md-4</div>
       </div>
 
-      <h3>Three unequal columns</h3>
+      <h2>Three unequal columns</h2>
       <p>Get three columns <strong>starting at desktops and scaling to large desktops</strong> of various widths. Remember, grid columns should add up to twelve for a single horizontal block. More than that, and columns start stacking no matter the viewport.</p>
       <div class="row">
         <div class="col-md-3">.col-md-3</div>
@@ -71,19 +71,19 @@
         <div class="col-md-3">.col-md-3</div>
       </div>
 
-      <h3>Two columns</h3>
+      <h2>Two columns</h2>
       <p>Get two columns <strong>starting at desktops and scaling to large desktops</strong>.</p>
       <div class="row">
         <div class="col-md-8">.col-md-8</div>
         <div class="col-md-4">.col-md-4</div>
       </div>
 
-      <h3>Full width, single column</h3>
+      <h2>Full width, single column</h2>
       <p class="text-warning">No grid classes are necessary for full-width elements.</p>
 
       <hr>
 
-      <h3>Two columns with two nested columns</h3>
+      <h2>Two columns with two nested columns</h2>
       <p>Per the documentation, nesting is easy—just put a row of columns within an existing column. This gives you two columns <strong>starting at desktops and scaling to large desktops</strong>, with another two (equal widths) within the larger column.</p>
       <p>At mobile device sizes, tablets and down, these columns and their nested columns will stack.</p>
       <div class="row">
@@ -99,7 +99,7 @@
 
       <hr>
 
-      <h3>Mixed: mobile and desktop</h3>
+      <h2>Mixed: mobile and desktop</h2>
       <p>The Bootstrap v4 grid system has five tiers of classes: xs (extra small), sm (small), md (medium), lg (large), and xl (extra large). You can use nearly any combination of these classes to create more dynamic and flexible layouts.</p>
       <p>Each tier of classes scales up, meaning if you plan on setting the same widths for xs and sm, you only need to specify xs.</p>
       <div class="row">
@@ -118,7 +118,7 @@
 
       <hr>
 
-      <h3>Mixed: mobile, tablet, and desktop</h3>
+      <h2>Mixed: mobile, tablet, and desktop</h2>
       <p></p>
       <div class="row">
         <div class="col-12 col-sm-6 col-lg-8">.col-12 .col-sm-6 .col-lg-8</div>