app/styles/app.css

@@ -180,6 +180,9 @@ body {
   border: none;
   cursor: pointer;
   padding: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .user-avatar-placeholder {
@@ -199,6 +202,7 @@ body {
   border-radius: 50%;
   object-fit: cover;
   flex-shrink: 0;
+  display: block;
 }
 
 .photo-preview-img {