[IMP] theme_*: prevent abuse of h1 and use font size classes

See related community PR.

task-1958098

closes odoo/design-themes#682

Related: odoo/enterprise#44986
Related: odoo/odoo#129791
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

theme_yes/views/snippets/s_cover.xml

@@ -11,8 +11,11 @@
         <div class="o_we_bg_filter" style="background-color: rgba(25, 41, 37, 0.55) !important;"/>
     </xpath>
     <!-- Title -->
+    <xpath expr="//h1" position="attributes">
+        <attribute name="class" add="display-1-fs" remove="display-3-fs" separator=" "/>
+    </xpath>
     <xpath expr="//h1" position="replace" mode="inner">
-        <font style="font-size: 92px; font-weight: bold;">Once in a lifetime moments</font>
+        Once in a lifetime moments
     </xpath>
     <!-- Paragraph -->
     <xpath expr="//p" position="replace" mode="inner">

theme_yes/views/snippets/s_picture.xml

@@ -7,7 +7,7 @@
         <attribute name="class" add="o_cc5" remove="o_cc2" separator=" "/>
     </xpath>
     <!-- Title -->
-    <xpath expr="//h2//font" position="replace" mode="inner">
+    <xpath expr="//h2" position="replace" mode="inner">
         Love is in the air
     </xpath>
     <!-- Paragraphs -->

theme_yes/views/snippets/s_title.xml

@@ -7,7 +7,7 @@
         <attribute name="class" add="o_cc o_cc2" separator=" "/>
     </xpath>
     <!-- Title -->
-    <xpath expr="//h1//font" position="replace" mode="inner">
+    <xpath expr="//h2" position="replace" mode="inner">
         Meet our team
     </xpath>
 </template>