Not-found page: a long @name wraps (the full browser smoke saw /@no_such_channel_x9 overflow a 320px phone) (#199)

ddiff --git a/public/js/app.js b/public/js/app.js
iindex 6e4579e5..4b4eeca5 100644
---- a/public/js/app.js
++++ b/public/js/app.js
@@@ -1179,7 +1179,7 @@ function showNotFound({ title = 'Page not found', message = 'Nothing lives at th
      if (el) {
          const box = document.createElement('div');
          box.className = 'content-container';
--        box.style.cssText = 'text-align:center;padding:12vh 16px';
++        box.style.cssText = 'text-align:center;padding:12vh 16px;overflow-wrap:anywhere';   // a long @name wraps on a 320px phone
          const h1 = document.createElement('h1');
          h1.textContent = title;
          const p = document.createElement('p');