Using px rather than em values

Should close https://github.com/twbs/bootstrap/issues/18556

diff --git a/docs/layout/responsive-utilities.md b/docs/layout/responsive-utilities.md
index f52b52db5f14cdb36d484d1605969e9f4f4041f9..26171d7454a3577690c05fcd588862500792961b 100644 (file)
--- a/docs/layout/responsive-utilities.md
+++ b/docs/layout/responsive-utilities.md
@@ -23,23 +23,23 @@ Try to use these on a limited basis and avoid creating entirely different versio
         <th></th>
         <th>
           Extra small devices
-          <small>Portrait phones (&lt;34em)</small>
+          <small>Portrait phones (&lt;544px)</small>
         </th>
         <th>
           Small devices
-          <small>Landscape phones (&ge;34em)</small>
+          <small>Landscape phones (&ge;544px - &lt;768px)</small>
         </th>
         <th>
           Medium devices
-          <small>Tablets (&ge;48em)</small>
+          <small>Tablets (&ge;768px - &lt;992px)</small>
         </th>
         <th>
           Large devices
-          <small>Desktops (&ge;62em)</small>
+          <small>Desktops (&ge;992px - &lt;1200px)</small>
         </th>
         <th>
           Extra large devices
-          <small>Desktops (&ge;75em)</small>
+          <small>Desktops (&ge;1200px)</small>
         </th>
       </tr>
     </thead>