diff --git a/packages/lib/src/form-fields/input.wc.svelte b/packages/lib/src/form-fields/input.wc.svelte
index 2b4b4bf5..ea495b9b 100644
--- a/packages/lib/src/form-fields/input.wc.svelte
+++ b/packages/lib/src/form-fields/input.wc.svelte
@@ -265,6 +265,7 @@
     -ms-flex-align: center;
     align-items: center;
     text-align: left;
+    box-sizing: border-box;
     width: 100%;
     height: 3rem;
     -webkit-user-select: none;