diff --git a/filter/mediaplugin/styles.css b/filter/mediaplugin/styles.css
index aaa69562d5e..3c0a1a81f9e 100644
--- a/filter/mediaplugin/styles.css
+++ b/filter/mediaplugin/styles.css
@@ -6,10 +6,14 @@
     margin-top: 5px;
     margin-bottom: 5px;
     text-align: center;
+}
 
+.mediaplugin,
+.mediaplugin video {
     /* Make videos as wide as possible without being wider than their containers */
     width: 100vw;
     max-width: 100%;
+    height: auto;
 }
 
 .mediaplugin > div {