refactor(WIP): scss, ts 공통 파일 묶기

hwe/scss/common/break_500px.scss

@@ -0,0 +1,15 @@
+$container-max-widths: (
+    md: 500px,
+    lg: 1020px,
+    xl: 1140px,
+    xxl: 1320px
+  );
+
+$grid-breakpoints: (
+  xs: 0,
+  sm: 520px,
+  md: 900px,
+  lg: 992px,
+  xl: 1200px,
+  xxl: 1400px
+);