[IMP] web: improve mobile view switcher

addons/web/static/src/xml/base.xml

@@ -210,8 +210,8 @@
 </t>
 
 <t t-name="ControlPanel.SwitchButtons.Mobile">
-    <button class="btn btn-primary btn-sm dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
-        <span class="o_switch_view_button_icon"/><span class="caret ml8"/>
+    <button class="btn btn-link btn-sm" data-toggle="dropdown" aria-expanded="false">
+        <span class="o_switch_view_button_icon"/>
     </button>
     <ul class="dropdown-menu dropdown-menu-right list-inline">
         <li t-foreach="views" t-as="view">

odoo/addons/base/static/src/scss/onboarding.scss

@@ -42,7 +42,7 @@ $o-onboarding-violet-ui-2: #FBEEC8;
 
     .o_onboarding_btn_close {
         @include o-position-absolute(auto, 0, 0);
-        padding: 6px $o-horizontal-padding + 6px;
+        padding: 6px 12px;
         cursor: pointer;
     }