Kinda went back to using align-items: stretch. Fixed error message floating.

src/App.scss

@@ -325,18 +325,35 @@ main-router {
   background-size: cover;
   padding: .6em .6em;
   text-align: left;
-  font-size: 1.3em;
-  line-height: 24px;
+  line-height: 28px;
   background-color: $fallback--btn;
   background-color: var(--btn, $fallback--btn);
   align-items: baseline;
 
   .title {
     flex: 1 0 auto;
+    font-size: 1.3em;
+  }
+
+  .alert {
+    white-space: nowrap;
+    text-overflow: ellipsis;
+    overflow-x: hidden;
   }
 
   button {
-    height: 100%;
+    flex-shrink: 0;
+  }
+
+  button, .alert {
+    // height: 100%;
+    line-height: 21px;
+    min-height: 0;
+    box-sizing: border-box;
+    margin: 0;
+    margin-left: .25em;
+    min-width: 1px;
+    align-self: stretch;
   }
 }
 

src/components/notifications/notifications.scss

@@ -22,10 +22,6 @@
   }
 
   .loadmore-error {
-    min-width: 6em;
-    text-align: center;
-    padding: 0 0.25em 0 0.25em;
-    margin: 0;
     color: $fallback--fg;
     color: var(--fg, $fallback--fg);
   }

src/components/timeline/timeline.vue

@@ -4,12 +4,12 @@
       <div class="title">
         {{title}}
       </div>
-      <button @click.prevent="showNewStatuses" class="loadmore-button" v-if="timeline.newStatusCount > 0 && !timelineError">
-        {{$t('timeline.show_new')}}{{newStatusCountStr}}
-      </button>
       <div @click.prevent class="loadmore-error alert error" v-if="timelineError">
         {{$t('timeline.error_fetching')}}
       </div>
+      <button @click.prevent="showNewStatuses" class="loadmore-button" v-if="timeline.newStatusCount > 0 && !timelineError">
+        {{$t('timeline.show_new')}}{{newStatusCountStr}}
+      </button>
       <div @click.prevent class="loadmore-text" v-if="!timeline.newStatusCount > 0 && !timelineError">
         {{$t('timeline.up_to_date')}}
       </div>
@@ -58,7 +58,6 @@
 
 .timeline {
   .loadmore-text {
-    font-size: 14px;
     opacity: 0.8;
     background-color: transparent;
     color: $fallback--faint;
@@ -66,11 +65,6 @@
   }
 
   .loadmore-error {
-    font-size: 14px;
-    min-width: 6em;
-    text-align: center;
-    padding: 0 0.25em 0 0.25em;
-    margin: 0;
     color: $fallback--fg;
     color: var(--fg, $fallback--fg);
   }