Fixing disappearing hamburger menu for narrow screens (#3929)

* Made top search bar more scalable for (physically) narrow screens

Removing `flex: auto` on `.top-left-block` for screens narrower than
`350px`allows the search bar to resize to fill up the remaining space.
Setting `width: 70px` on `#typeahead-container input` for mobile widths
prevents the hamburger button from being squished at certain widths.
Given that the padding adds up to `50px`, setting what amounts to the
minimum width of the search field to `70px` seems reasonable.

Fixes #3199.

* Making hamburger button margin and spacing narrower for mobile

The clickable area is restricted to the icon anyway, and the extra space
benefits the search field width on narrow screens.

2 files changed, 5 insertions, 6 deletions

diff --git a/client/src/app/app.component.scss b/client/src/app/app.component.scss
index e8447719a..42293e412 100644
--- a/client/src/app/app.component.scss
+++ b/client/src/app/app.component.scss
@@ -43,6 +43,10 @@ $assets-path: '../assets';
         background-color: pvar(--mainForegroundColor);
         mask-image: url('#{$assets-path}/images/misc/menu.svg');
         margin: 0 18px 0 20px;
+        
+        @media screen and (max-width: $mobile-view) {
+          margin: 0 10px;
+        }
       }
     }
 
@@ -71,16 +75,11 @@ $assets-path: '../assets';
     }
 
     @media screen and (max-width: $mobile-view) {
-      width: 70px;
 
       .peertube-title {
         display: none;
       }
     }
-
-    @media screen and (max-width: 350px) {
-      flex: auto;
-    }
   }
 
   .header-right {
diff --git a/client/src/app/header/search-typeahead.component.scss b/client/src/app/header/search-typeahead.component.scss
index f8d68e986..a60aa38d6 100644
--- a/client/src/app/header/search-typeahead.component.scss
+++ b/client/src/app/header/search-typeahead.component.scss
@@ -86,7 +86,7 @@ li.suggestion {
     flex: 1;
 
     input {
-      width: unset;
+      width: 70px;
     }
   }