diff --git a/.github/README-es.md b/.github/README-es.md
index 78384ca..115e59a 100644
--- a/.github/README-es.md
+++ b/.github/README-es.md
@@ -32,9 +32,9 @@ Importa el CSS utiliando un elemento ``:
```html
-
+
-
+
```
diff --git a/.github/README-jp.md b/.github/README-jp.md
index 7dbed27..3cbb0e6 100644
--- a/.github/README-jp.md
+++ b/.github/README-jp.md
@@ -32,9 +32,9 @@ yarn add nes.css
```html
-
+
-
+
```
diff --git a/.github/README-pt-BR.md b/.github/README-pt-BR.md
index 845bd11..e4ef633 100644
--- a/.github/README-pt-BR.md
+++ b/.github/README-pt-BR.md
@@ -32,9 +32,9 @@ Importe o CSS através de um elemento ``:
```html
-
+
-
+
```
diff --git a/.github/README-zh-CN.md b/.github/README-zh-CN.md
index aaf95bb..9d90f81 100644
--- a/.github/README-zh-CN.md
+++ b/.github/README-zh-CN.md
@@ -22,9 +22,9 @@ yarn add nes.css
```html
-
+
-
+
```
diff --git a/README.md b/README.md
index 72ff32e..83f3c58 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,9 @@ Import the CSS via a `` element:
```html
-
+
-
+
```
diff --git a/index.html b/index.html
index 2c91c93..0567b86 100644
--- a/index.html
+++ b/index.html
@@ -14,7 +14,7 @@
NES.css - NES-style CSS Framework
-
+
diff --git a/scss/base/variables.scss b/scss/base/variables.scss
index 2eee3d8..b760623 100644
--- a/scss/base/variables.scss
+++ b/scss/base/variables.scss
@@ -2,40 +2,40 @@
$font-family: "Press Start 2P" !default;
$font-size: 16px !default;
-$base-color: $color-black;
-$background-color: $color-white;
+$base-color: $color-black !default;
+$background-color: $color-white !default;
-$cursor-url: url(../assets/cursor.png);
-$cursor-click-url: url(../assets/cursor-click.png) 14 0;
+$cursor-url: url(../assets/cursor.png) !default;
+$cursor-click-url: url(../assets/cursor-click.png) 14 0 !default;
-$border-size: 4px;
+$border-size: 4px !default;
$default-colors: (
normal: $background-color,
hover: #e7e7e7,
shadow: #adafbc
-);
+) !default;
$disabled-colors: (
normal: #d3d3d3,
shadow: #adafbc
-);
+) !default;
$primary-colors: (
normal: #209cee,
hover: #108de0,
shadow: #006bb3
-);
+) !default;
$success-colors: (
normal: #92cc41,
hover: #76c442,
shadow: #4aa52e
-);
+) !default;
$warning-colors: (
normal: #f7d51d,
hover: #f2c409,
shadow: #e59400
-);
+) !default;
$error-colors: (
normal: #e76e55,
hover: #ce372b,
shadow: #8c2022
-);
+) !default;