diff --git a/src/lib/input/input-container.scss b/src/lib/input/input-container.scss
index 3d36c8d3c320..f1e974f77607 100644
--- a/src/lib/input/input-container.scss
+++ b/src/lib/input/input-container.scss
@@ -206,6 +206,7 @@ textarea.mat-input-element {
     position: absolute;
     height: $mat-input-underline-height * 2;
     top: 0;
+    left: 0;
     width: 100%;
     transform-origin: 50%;
     transform: scaleX(0.5);