diff --git a/public/styles/tools/_box-shadow.scss b/public/styles/tools/_box-shadow.scss
new file mode 100644
index 0000000..902a307
--- /dev/null
+++ b/public/styles/tools/_box-shadow.scss
@@ -0,0 +1,20 @@
+/*
+ *  Box-Shadow
+ *    Box shadow tools
+ *
+ *  Dependencies:
+ *
+ *  Version:
+ *    1.0.0 - 2018/02/23
+ */
+@mixin t-box-shadow($top, $left, $blur, $color, $inset: false) {
+  @if $inset {
+    -webkit-box-shadow:inset $top $left $blur $color;
+    -moz-box-shadow:inset $top $left $blur $color;
+    box-shadow:inset $top $left $blur $color;
+  } @else {
+    -webkit-box-shadow: $top $left $blur $color;
+    -moz-box-shadow: $top $left $blur $color;
+    box-shadow: $top $left $blur $color;
+  }
+}