diff --git a/django/contrib/admin/static/admin/css/base.css b/django/contrib/admin/static/admin/css/base.css
index 6551e232a2..34c0b90e40 100644
--- a/django/contrib/admin/static/admin/css/base.css
+++ b/django/contrib/admin/static/admin/css/base.css
@@ -827,10 +827,12 @@ table#change-history tbody th {
 
 #header {
     width: auto;
-    height: 40px;
+    height: auto;
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
     padding: 10px 40px;
     background: #417690;
-    line-height: 40px;
     color: #ffc;
     overflow: hidden;
 }
diff --git a/django/contrib/admin/static/admin/css/responsive.css b/django/contrib/admin/static/admin/css/responsive.css
index 05fd2c5123..5b0d1ec39b 100644
--- a/django/contrib/admin/static/admin/css/responsive.css
+++ b/django/contrib/admin/static/admin/css/responsive.css
@@ -38,11 +38,9 @@ input[type="submit"], button {
     /* Header */
 
     #header {
-        display: flex;
         flex-direction: column;
         padding: 15px 30px;
-        height: auto;
-        line-height: 1;
+        justify-content: flex-start;
     }
 
     #branding h1 {