replace deprecated slash division with math division in Sass

Change-Id: I664c367e06eb166f74197ac50ef90dc24a7b5ef9
diff --git a/dev/scss/main/main.scss b/dev/scss/main/main.scss
index e2bb6be..bf6e2dc 100644
--- a/dev/scss/main/main.scss
+++ b/dev/scss/main/main.scss
@@ -1,3 +1,4 @@
+@use 'sass:math';
 @import "highlight";   // JSON highlighting
 @import "kwic";        // Kwic view information
 @import "logos";       // Logo images
@@ -21,11 +22,11 @@
 
 
 main {
-  padding-bottom: $footer-height + ($standard-margin / 2);
+  padding-bottom: $footer-height + math.div($standard-margin,2);
 
   margin: {
     left:  $standard-margin; 
-    right: ($standard-margin / 2);
+    right: math.div($standard-margin,2);
   }
 
   &.embedded {
diff --git a/dev/scss/main/pagination.scss b/dev/scss/main/pagination.scss
index d09162d..f261fc7 100644
--- a/dev/scss/main/pagination.scss
+++ b/dev/scss/main/pagination.scss
@@ -1,4 +1,5 @@
 @charset "utf-8";
+@use 'sass:math';
 @import "../util";
 
 /**
@@ -22,8 +23,8 @@
    */
     position:    fixed;
     font-size:   0;
-    right:       ($standard-margin / 4);
-    bottom:      ($standard-margin / 2);
+    right:       math.div($standard-margin,4);
+    bottom:      math.div($standard-margin,2);
     z-index:     35;
     padding:     0;
     height:      auto;
diff --git a/dev/scss/main/view/matchtable.scss b/dev/scss/main/view/matchtable.scss
index 6239c61..ef01955 100644
--- a/dev/scss/main/view/matchtable.scss
+++ b/dev/scss/main/view/matchtable.scss
@@ -1,3 +1,4 @@
+@use 'sass:math';
 @import "../../util";
 
 /**
@@ -10,7 +11,7 @@
 
   > div {
     z-index:      20;
-    margin-left:  $left-distance - ($border-size / 2);
+    margin-left:  $left-distance - math.div($border-size,2);
     margin-right: $right-view-distance;
     padding:      0;
     overflow-x:   auto;
@@ -86,13 +87,13 @@
     }
 
     > th:nth-of-type(2) {
-      left: ($left-width / 2) + $border-size;
+      left: math.div($left-width,2) + $border-size;
     }
 
     // Includes header line as well
     > * {
       @include cell-info;
-      border: ($border-size / 2) solid $dark-orange;
+      border: math.div($border-size,2) solid $dark-orange;
     }
 
     > td {