[fix] LESS syntax compatibility

Author: TechQuery

components/Activity/Hackathon/Awards.module.less

@@ -1,6 +1,7 @@
 @import './theme.less';
 
-;
+.section-frame() {
+}
 
 .supportEyebrow {
   margin: 0 0 0.4rem;
@@ -81,7 +82,6 @@
 }
 
 .badgeTile {
-  ;
   transition:
     transform 0.22s ease,
     border-color 0.22s ease;
@@ -171,7 +171,6 @@
 }
 
 .supportCard {
-  ;
   display: grid;
   grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
   gap: 1.25rem;

components/Activity/Hackathon/FAQ.module.less

@@ -1,6 +1,7 @@
 @import './theme.less';
 
-;
+.section-frame() {
+}
 
 .faqGrid {
   grid-template-columns: repeat(2, minmax(0, 1fr));

components/Activity/Hackathon/Overview.module.less

@@ -1,6 +1,7 @@
 @import './theme.less';
 
-;
+.section-frame() {
+}
 
 .themePanel {
   position: relative;

components/Activity/Hackathon/Participants.module.less

@@ -1,6 +1,7 @@
 @import './theme.less';
 
-;
+.section-frame() {
+}
 
 .participantCloud {
   grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));

components/Activity/Hackathon/Resources.module.less

@@ -1,10 +1,10 @@
 @import './theme.less';
 
-;
+.section-frame() {
+}
 
 .resourceCard,
 .projectCard {
-  ;
   transition:
     transform 0.22s ease,
     border-color 0.22s ease;

components/Activity/Hackathon/Schedule.module.less

@@ -1,6 +1,7 @@
 @import './theme.less';
 
-;
+.section-frame() {
+}
 
 .scheduleIntro {
   margin-bottom: 0;
@@ -53,7 +54,6 @@
 }
 
 .dayCard {
-  ;
   position: relative;
   transition:
     transform 0.22s ease,