diff --git a/src/editor/_basic.scss b/src/editor/_basic.scss
new file mode 100644
index 0000000..356837d
--- /dev/null
+++ b/src/editor/_basic.scss
@@ -0,0 +1,45 @@
+@use 'vars';
+
+input[type=text],
+input[type=email] {
+  padding: 2px 4px;
+  display: block;
+}
+
+textarea {
+  font-family: var(--font-default);
+  line-height: 1.3;
+  padding: var(--gap);
+}
+
+input[type=text],
+input[type=email],
+textarea {
+  width: 100%;
+  box-sizing: border-box;
+}
+
+input[type=text],
+input[type=email],
+select,
+textarea {
+  border: 1px solid #999;
+  border-radius: 2px;
+}
+
+button {
+  @include vars.normal-button;
+
+  margin-right: var(--gap);
+  // last-of-type should not be used here
+  &:last-child {
+    margin-right: 0;
+  }
+
+  svg {
+    vertical-align: middle;
+    font-size: 14px;
+    position: relative;
+    bottom: 1px;
+  }
+}
diff --git a/src/editor/_json-editor.scss b/src/editor/_json-editor.scss
index 37771e4..628e230 100644
--- a/src/editor/_json-editor.scss
+++ b/src/editor/_json-editor.scss
@@ -1,45 +1,4 @@
-@mixin button-base {
-  appearance: none;
-  user-select: none;
-  vertical-align: middle;
-  outline: 0;
-  display: inline-block;
-  cursor: pointer;
-  position: relative;
-}
-
-@mixin normal-button {
-  @include button-base;
-
-  background-color: #eee;
-  border: 1px solid transparent;
-  border-radius: 2px;
-  padding: 0px 8px;
-  line-height: 22px;
-
-  &:hover {
-    background-color: #e1e1e1;
-  }
-  &:active {
-    border-color: #555;
-  }
-}
-
-@mixin text-button {
-  @include button-base;
-  background-color: transparent;
-  padding: 0;
-  font-size: 12px;
-  line-height: 1;
-  color: #555;
-  &:hover {
-    border-bottom: 1px solid #999;
-  }
-  &:active {
-    border-color: transparent;
-    border-bottom: 1px solid #000;
-  }
-}
+@use 'vars';
 
 .editor-container {
   font-size: 14px;
@@ -50,38 +9,6 @@
   p {
     margin: 0 0 var(--gap) 0;
   }
-  input[type=text],
-  input[type=email] {
-    padding: 2px 4px;
-  }
-  textarea {
-    font-family: var(--font-default);
-    line-height: 1.3;
-    padding: var(--gap);
-  }
-  input[type=text],
-  input[type=email],
-  select,
-  textarea {
-    border: 1px solid #888;
-    border-radius: 2px;
-  }
-  button {
-    @include normal-button;
-
-    margin-right: var(--gap);
-    // last-of-type should not be used here
-    &:last-child {
-      margin-right: 0;
-    }
-
-    svg {
-      vertical-align: middle;
-      font-size: 14px;
-      position: relative;
-      bottom: 1px;
-    }
-  }
   iconify-icon {
     font-size: 15px;
   }
@@ -147,7 +74,7 @@
     top: 2px;
 
     button {
-      @include text-button;
+      @include vars.text-button;
     }
   }
   .json-editor-btn-add {
@@ -170,8 +97,8 @@
   }
 
   .je-textarea {
-    height: 150px;
-    min-height: 150px;
+    height: 120px;
+    min-height: 120px;
     max-height: 500px;
     resize: vertical;
   }
diff --git a/src/editor/_vars.scss b/src/editor/_vars.scss
new file mode 100644
index 0000000..767dd07
--- /dev/null
+++ b/src/editor/_vars.scss
@@ -0,0 +1,42 @@
+@mixin button-base {
+  appearance: none;
+  user-select: none;
+  vertical-align: middle;
+  outline: 0;
+  display: inline-block;
+  cursor: pointer;
+  position: relative;
+}
+
+@mixin normal-button {
+  @include button-base;
+
+  background-color: #eee;
+  border: 1px solid transparent;
+  border-radius: 2px;
+  padding: 0px 8px;
+  line-height: 22px;
+
+  &:hover {
+    background-color: #e1e1e1;
+  }
+  &:active {
+    border-color: #555;
+  }
+}
+
+@mixin text-button {
+  @include button-base;
+  background-color: transparent;
+  padding: 0;
+  font-size: 12px;
+  line-height: 1;
+  color: #555;
+  &:hover {
+    border-bottom: 1px solid #999;
+  }
+  &:active {
+    border-color: transparent;
+    border-bottom: 1px solid #000;
+  }
+}
diff --git a/src/editor/styles.scss b/src/editor/styles.scss
index 357e4a4..0b8dbe6 100644
--- a/src/editor/styles.scss
+++ b/src/editor/styles.scss
@@ -1,3 +1,4 @@
+@use 'basic';
 @use 'json-editor';
 
 :root {