diff --git a/src/scss/02-tools/_f-to-number.scss b/src/scss/02-tools/_f-to-number.scss
new file mode 100644
index 00000000..22828520
--- /dev/null
+++ b/src/scss/02-tools/_f-to-number.scss
@@ -0,0 +1,50 @@
+@use "sass:map";
+@use "sass:math";
+@use "sass:string";
+
+/**
+ * To number - convert string to number
+ *
+ * @author: Stackoverflow - https://stackoverflow.com/questions/47630616/scss-arithmetic-operation-with-string
+ *
+ * @param string $value
+ *
+ * Examples :
+ *          @for $i from 1 through 6 {
+ *              &[data-per-line="#{$i}"] {
+ *                  .card {
+ *                      width: column(to-number(#{math.div(12, $i + 1)}));
+ *                  }
+ *              }
+ *          }
+ */
+
+@function to-number($value) {
+    @if type-of($value) == "number" {
+        @return $value;
+    } @else if type-of($value) != "string" {
+        @error "Value for `to-number` should be a number or a string.";
+    }
+
+    $result: 0;
+    $digits: 0;
+    $minus: string.slice($value, 1, 1) == "-";
+    $numbers: ("0": 0, "1": 1, "2": 2, "3": 3, "4": 4, "5": 5, "6": 6, "7": 7, "8": 8, "9": 9);
+
+    @for $i from if($minus, 2, 1) through str-length($value) {
+        $character: string.slice($value, $i, $i);
+
+        @if (index(map-keys($numbers), $character) or $character == ".") {
+            @if $character == "." {
+                $digits: 1;
+            } @else if $digits == 0 {
+                $result: $result * 10 + map.get($numbers, $character);
+            } @else {
+                $digits: $digits * 10;
+                $result: $result + math.div(map.get($numbers, $character), $digits);
+            }
+        }
+    }
+
+    @return if($minus, -$result, $result);
+}
diff --git a/src/scss/02-tools/_m-sr-only.scss b/src/scss/02-tools/_m-sr-only.scss
index 5b3ab2bc..1c778d16 100644
--- a/src/scss/02-tools/_m-sr-only.scss
+++ b/src/scss/02-tools/_m-sr-only.scss
@@ -43,6 +43,8 @@
 
 @mixin sr-only($focusable: false) {
     position: absolute;
+    top: auto !important;
+    left: -10000px !important;
     width: 1px !important;
     height: 1px !important;
     padding: 0 !important;