diff --git a/components/input/autosize.spec.ts b/components/input/autosize.spec.ts
index f7aac3d9e0..4581760a21 100644
--- a/components/input/autosize.spec.ts
+++ b/components/input/autosize.spec.ts
@@ -219,11 +219,10 @@ describe('autoresize', () => {
   encapsulation: ViewEncapsulation.None,
   styles: [
     `
-      textarea.cdk-textarea-autosize-measuring {
+      textarea.nz-textarea-autosize-measuring {
         height: auto !important;
         overflow: hidden !important;
         padding: 2px 0 !important;
-        box-sizing: content-box !important;
       }
     `
   ]
@@ -237,11 +236,10 @@ export class NzTestInputWithTextAreaAutoSizeStringComponent {
   encapsulation: ViewEncapsulation.None,
   styles: [
     `
-      textarea.cdk-textarea-autosize-measuring {
+      textarea.nz-textarea-autosize-measuring {
         height: auto !important;
         overflow: hidden !important;
         padding: 2px 0 !important;
-        box-sizing: content-box !important;
       }
     `
   ]
@@ -256,11 +254,10 @@ export class NzTestInputWithTextAreaAutoSizeObjectComponent {
   encapsulation: ViewEncapsulation.None,
   styles: [
     `
-      textarea.cdk-textarea-autosize-measuring {
+      textarea.nz-textarea-autosize-measuring {
         height: auto !important;
         overflow: hidden !important;
         padding: 2px 0 !important;
-        box-sizing: content-box !important;
       }
     `
   ]
diff --git a/components/input/style/patch.less b/components/input/style/patch.less
index 5d8fac2760..9f71d9c726 100644
--- a/components/input/style/patch.less
+++ b/components/input/style/patch.less
@@ -4,7 +4,6 @@ textarea.nz-textarea-autosize-measuring {
   // Having 2px top and bottom padding seems to fix a bug where Chrome gets an incorrect
   // measurement. We just have to account for it later and subtract it off the final result.
   padding: 2px 0 !important;
-  box-sizing: content-box !important;
 }
 
 .@{search-prefix} {