diff --git a/src/components/input/themes/shared/input.bootstrap.scss b/src/components/input/themes/shared/input.bootstrap.scss
index ba50e5360..e7b5b46c3 100644
--- a/src/components/input/themes/shared/input.bootstrap.scss
+++ b/src/components/input/themes/shared/input.bootstrap.scss
@@ -7,7 +7,6 @@ $theme: $bootstrap;
     --component-size: var(--ig-size, #{var-get($theme, 'default-size')});
     --input-size: var(--component-size);
     --font: #{sizable(rem(14px), rem(16px), rem(20px))};
-    --input-font: #{sizable(rem(16px), rem(16px), rem(20px))};
     --input-border-color: #{var-get($theme, 'border-color')};
     --input-height: #{var-get($theme, 'size')};
     --affix-padding: #{pad-inline(rem(8px), rem(12px), rem(14px))};
@@ -40,8 +39,9 @@ $theme: $bootstrap;
 }
 
 [part~='input'] {
+    @include type-style('body-1');
+
     border-radius: var-get($theme, 'border-border-radius');
-    font-size: var(--input-font);
     padding-inline: pad-inline(8px, 12px, 16px);
     padding-block: pad-block(4px, 6px, 8px);
     color: var-get($theme, 'idle-text-color');
diff --git a/src/components/textarea/themes/shared/textarea.bootstrap.scss b/src/components/textarea/themes/shared/textarea.bootstrap.scss
index 01741c5e0..d6a6fa608 100644
--- a/src/components/textarea/themes/shared/textarea.bootstrap.scss
+++ b/src/components/textarea/themes/shared/textarea.bootstrap.scss
@@ -102,7 +102,6 @@ textarea {
     padding-inline: pad-inline(rem(8px), rem(12px), rem(16px));
     border-radius: var-get($theme, 'border-border-radius');
     z-index: 1;
-    font-size: pad(rem(14px), rem(16px), rem(20px));
     transition: box-shadow .15s ease-out, border .15s ease-out;
 }