Init with some changes to the Serif Theme

_sass/_bootstrap-variables.scss

@@ -0,0 +1,37 @@
+// assets/css/style.scss is where Jekyll loads the main stylesheet
+
+$grid-breakpoints: (
+  xs: 0,
+  sm: 576px,
+  md: 768px,
+  lg: 992px,
+  xl: 1300px,
+);
+
+$container-max-widths: (
+  sm: 566px,
+  md: 740px,
+  lg: 960px,
+  xl: 1140px,
+);
+
+$grid-gutter-width: 30px;
+
+$spacer: 1rem;
+$spacers: ();
+$spacers: map-merge(
+  (
+    0: 0,
+    1: 10px,
+    2: 20px,
+    3: 30px,
+    4: 40px,
+    5: 50px,
+    6: 60px,
+    7: 70px,
+    8: 80px,
+    9: 90px,
+    10: 100px,
+  ),
+  $spacers
+);