diff --git a/build.dev.js b/build.dev.js
index f721101..4bce90e 100644
--- a/build.dev.js
+++ b/build.dev.js
@@ -87,7 +87,7 @@ function mkWCFile({ style, html, js }) {
       /import ([\w]*) from '([a-z0-9\/\.\-_]*)'/g,
       'import $1 from "$2.js"'
     )
-    .replace(/constructor\([^)]?\)\s+\{/, 'constructor() {\n super()')
+    .replace(/constructor\([^)]?\)\s+\{/, 'constructor() {\n super();')
     .replace(
       '/* render */',
       `
diff --git a/build.prod.js b/build.prod.js
index 0cf66bc..2d3060f 100644
--- a/build.prod.js
+++ b/build.prod.js
@@ -97,11 +97,10 @@ function mkWCFile({ style, html, js }) {
       /import ([\w]*) from '([a-z0-9\/\.\-_]*)'/g,
       'import $1 from "$2.js"'
     )
+    .replace(/constructor\([^)]?\)\s+\{/, 'constructor() {\n super();')
     .replace(
       '/* render */',
       `
-      super()
-      
       Object.defineProperty(this, 'root', {
         value: this.attachShadow({ mode: 'open' }),
         writable: true,
diff --git a/src/form/button.wc b/src/form/button.wc
index 946e8c4..afb21a2 100644
--- a/src/form/button.wc
+++ b/src/form/button.wc
@@ -21,6 +21,7 @@
     min-width: 32px;
     height: 32px;
     padding: 0 5px;
+    margin: auto;
     font-size: 14px;
     border: 1px solid nth($cp, 3);
     border-radius: 4px;
diff --git a/src/scroll/index.wc b/src/scroll/index.wc
index 0c0cd57..a6e05d2 100644
--- a/src/scroll/index.wc
+++ b/src/scroll/index.wc
@@ -12,8 +12,8 @@
 
   .container {
     overflow: hidden;
-    width: inherit;
-    height: inherit;
+    width: 100%;
+    height: 100%;
   }
 }