MDL-76000 theme_boost: reset form padding when in tertiary navigation.

theme/boost/scss/moodle/tertiarynavigation.scss

@@ -16,6 +16,14 @@
     }
 }
 
+@include media-breakpoint-down(sm) {
+    .tertiary-navigation {
+        .mform {
+            padding-left: initial;
+        }
+    }
+}
+
 @media print {
     .tertiary-navigation {
         display: none;

theme/boost/style/moodle.css

@@ -21712,6 +21712,10 @@ div.editor_atto_toolbar button .icon {
   .tertiary-navigation .row {
     column-gap: 20px; }
 
+@media (max-width: 767.98px) {
+  .tertiary-navigation .mform {
+    padding-left: initial; } }
+
 @media print {
   .tertiary-navigation {
     display: none; } }

theme/classic/style/moodle.css

@@ -21658,6 +21658,10 @@ div.editor_atto_toolbar button .icon {
   .tertiary-navigation .row {
     column-gap: 20px; }
 
+@media (max-width: 767.98px) {
+  .tertiary-navigation .mform {
+    padding-left: initial; } }
+
 @media print {
   .tertiary-navigation {
     display: none; } }