chore: 修改产业学院-教学研发CSS样式

pages/services/teach.vue

@@ -139,11 +139,6 @@ export default {
   methods: {}
 }
 </script>
-<style lang="scss">
-.section-4 {
-  --main-color: #fff;
-}
-</style>
 
 <style lang="scss" scoped>
 .banner {