diff --git a/packages/calcite-components/src/components/combobox/combobox.scss b/packages/calcite-components/src/components/combobox/combobox.scss
index 6d3bfbb7736..388bbd217b1 100644
--- a/packages/calcite-components/src/components/combobox/combobox.scss
+++ b/packages/calcite-components/src/components/combobox/combobox.scss
@@ -17,7 +17,8 @@
   @apply text-n2;
   --calcite-combobox-item-spacing-unit-l: theme("spacing.2");
   --calcite-combobox-item-spacing-unit-s: theme("spacing.1");
-  --calcite-combobox-input-height: theme("spacing.6");
+  --calcite-combobox-input-height: theme("spacing.4");
+  --calcite-internal-combobox-input-margin-block: calc(theme("spacing.1") - theme("borderWidth.DEFAULT"));
 
   .x-button {
     margin-inline-end: theme("spacing.2");
@@ -28,7 +29,8 @@
   @apply text-n1;
   --calcite-combobox-item-spacing-unit-l: theme("spacing.3");
   --calcite-combobox-item-spacing-unit-s: theme("spacing.2");
-  --calcite-combobox-input-height: theme("spacing.8");
+  --calcite-combobox-input-height: theme("spacing.4");
+  --calcite-internal-combobox-input-margin-block: calc(theme("spacing.2") - theme("borderWidth.DEFAULT"));
 
   .x-button {
     margin-inline-end: theme("spacing.3");
@@ -39,7 +41,8 @@
   @apply text-0;
   --calcite-combobox-item-spacing-unit-l: theme("spacing.4");
   --calcite-combobox-item-spacing-unit-s: theme("spacing.3");
-  --calcite-combobox-input-height: theme("spacing.11");
+  --calcite-combobox-input-height: theme("spacing.6");
+  --calcite-internal-combobox-input-margin-block: calc(theme("spacing[2.5]") - theme("borderWidth.DEFAULT"));
 
   .x-button {
     margin-inline-end: theme("spacing.4");
@@ -101,7 +104,8 @@
 }
 
 .input--single {
-  @apply mb-0 mt-0 p-0;
+  @apply p-0;
+  margin-block: var(--calcite-internal-combobox-input-margin-block);
 }
 
 .wrapper--active .input-single {
@@ -121,7 +125,7 @@
 }
 
 .input-wrap {
-  @apply flex flex-grow;
+  @apply flex flex-grow items-center;
 }
 
 .input-wrap--single {