diff --git a/themes/cozy-hugo/assets/css/main.scss b/themes/cozy-hugo/assets/css/main.scss
index b1b9403..632266f 100644
--- a/themes/cozy-hugo/assets/css/main.scss
+++ b/themes/cozy-hugo/assets/css/main.scss
@@ -49,6 +49,7 @@ header {
     background-color: var(--background-header);
     background-image: url(home-header-optimized.svg);
     background-position: center;
+    background-size: cover;
     color: var(--text);
     display: flex;
     flex-direction: column;