[Style] Separate news.scss from main

src/assets/scss/main.scss

@@ -9,7 +9,7 @@
 // @import './CFP/cfp_introduction.scss';
 // @import './CFP/CFP.scss';
 @import './CFP/cfpSubNew.scss';
-@import "./news.scss";
+// @import "./news.scss";
 
 .sitcon-burnfont {
   color: $mid-blue;

src/pages/News.vue

@@ -26,4 +26,5 @@ export default class News extends Vue {
 </script>
 
 <style lang="scss">
+@import '@/assets/scss/news'
 </style>