diff --git a/_includes/authors.html b/_includes/authors.html
index 8b08a6b..79d8682 100644
--- a/_includes/authors.html
+++ b/_includes/authors.html
@@ -1,4 +1,4 @@
-          <div class="tile is-child widget">
+          <div class="widget">
             <div class="card">
               <header class="card-header">
                 <p class="card-header-title nice-title">
diff --git a/_layouts/aggregate_default.html b/_layouts/aggregate_default.html
index 1a2ed2c..05ff48f 100644
--- a/_layouts/aggregate_default.html
+++ b/_layouts/aggregate_default.html
@@ -14,10 +14,8 @@
     </section>
 
     <div class="main-container" style="margin-top:15px;">
-      <div class="tile is-ancestor is-vertical">
 
-
-        <nav class="navbar has-shadow" role="navigation" aria-label="main navigation">
+      <nav class="navbar has-shadow" role="navigation" aria-label="main navigation">
 
           <div class="navbar-brand">
 
@@ -69,49 +67,48 @@
 
         </nav>
 
-        <div class="tile is-parent">
-          <div class="tile is-8 is-child main">
+      <div class="columns">
+        <div class="column is-8 main">
 
-            {{ content }}
+          {{ content }}
 
-          </div>
+        </div>
 
-          <div class="tile is-4 is-child">
-            <div class="tile is-parent is-vertical sidebar">
-
-              <div id="recentAuthorPostsContainer" class="tile is-child widget">
-                <div class="card">
-                  <header class="card-header">
-                    <p class="card-header-title nice-title">
-                    Recent Author Posts
-                    </p>
-                  </header>
-                  <div class="card-content">
-                    <div class="content nice-text">
-                      <ul id="recentAuthorPosts"></ul>
-                    </div>
+        <div class="column is-4">
+          <div class="sidebar">
+
+            <div id="recentAuthorPostsContainer" class="widget">
+              <div class="card">
+                <header class="card-header">
+                  <p class="card-header-title nice-title">
+                  Recent Author Posts
+                  </p>
+                </header>
+                <div class="card-content">
+                  <div class="content nice-text">
+                    <ul id="recentAuthorPosts"></ul>
                   </div>
                 </div>
               </div>
+            </div>
 
-              <div class="tile is-child widget">
-                <div class="card">
-                  <header class="card-header">
-                    <p class="card-header-title nice-title">
-                    Recent Site Posts
-                    </p>
-                  </header>
-                  <div class="card-content">
-                    <div class="content nice-text">
-                      <ul id="recentPosts"></ul>
-                    </div>
+            <div class="widget">
+              <div class="card">
+                <header class="card-header">
+                  <p class="card-header-title nice-title">
+                  Recent Site Posts
+                  </p>
+                </header>
+                <div class="card-content">
+                  <div class="content nice-text">
+                    <ul id="recentPosts"></ul>
                   </div>
                 </div>
               </div>
+            </div>
 
-              {% include authors.html %}
+            {% include authors.html %}
 
-            </div>
           </div>
         </div>
       </div>
diff --git a/_layouts/author_default.html b/_layouts/author_default.html
index 6964f52..8b9f1e2 100644
--- a/_layouts/author_default.html
+++ b/_layouts/author_default.html
@@ -14,10 +14,8 @@
     </section>
 
     <div class="main-container" style="margin-top:15px;">
-      <div class="tile is-ancestor is-vertical">
 
-
-        <nav class="navbar has-shadow" role="navigation" aria-label="main navigation">
+      <nav class="navbar has-shadow" role="navigation" aria-label="main navigation">
 
           <div class="navbar-brand">
 
@@ -79,49 +77,48 @@
 
         </nav>
 
-        <div class="tile is-parent">
-          <div class="tile is-8 is-child main">
+      <div class="columns">
+        <div class="column is-8 main">
 
-            {{ content }}
+          {{ content }}
 
-          </div>
+        </div>
 
-          <div class="tile is-4 is-child">
-            <div class="tile is-parent is-vertical sidebar">
-
-              <div id="recentAuthorPostsContainer" class="tile is-child widget">
-                <div class="card">
-                  <header class="card-header">
-                    <p class="card-header-title nice-title">
-                    Recent Author Posts
-                    </p>
-                  </header>
-                  <div class="card-content">
-                    <div class="content nice-text">
-                      <ul id="recentAuthorPosts"></ul>
-                    </div>
+        <div class="column is-4">
+          <div class="sidebar">
+
+            <div id="recentAuthorPostsContainer" class="widget">
+              <div class="card">
+                <header class="card-header">
+                  <p class="card-header-title nice-title">
+                  Recent Author Posts
+                  </p>
+                </header>
+                <div class="card-content">
+                  <div class="content nice-text">
+                    <ul id="recentAuthorPosts"></ul>
                   </div>
                 </div>
               </div>
+            </div>
 
-              <div class="tile is-child widget">
-                <div class="card">
-                  <header class="card-header">
-                    <p class="card-header-title nice-title">
-                    Recent Site Posts
-                    </p>
-                  </header>
-                  <div class="card-content">
-                    <div class="content nice-text">
-                      <ul id="recentPosts"></ul>
-                    </div>
+            <div class="widget">
+              <div class="card">
+                <header class="card-header">
+                  <p class="card-header-title nice-title">
+                  Recent Site Posts
+                  </p>
+                </header>
+                <div class="card-content">
+                  <div class="content nice-text">
+                    <ul id="recentPosts"></ul>
                   </div>
                 </div>
               </div>
+            </div>
 
-              {% include authors.html %}
+            {% include authors.html %}
 
-            </div>
           </div>
         </div>
       </div>
diff --git a/_layouts/default.html b/_layouts/default.html
index 11fd56f..9635ccc 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -14,39 +14,36 @@
     </section>
 
     <div class="main-container" style="margin-top:15px;">
-      <div class="tile is-ancestor is-vertical">
 
-        {% include nav.html %}
+      {% include nav.html %}
 
-        <div class="tile is-parent">
-          <div class="tile is-8 is-child main">
+      <div class="columns">
+        <div class="column is-8 main">
 
-            {{ content }}
+          {{ content }}
 
-          </div>
-
-          <div class="tile is-4 is-child">
-            <div class="tile is-parent is-vertical sidebar">
-
-              <div class="tile is-child widget">
+        </div>
 
-                <div class="card">
-                  <header class="card-header">
-                    <p class="card-header-title nice-title">
-                    Recent Posts
-                    </p>
-                  </header>
-                  <div class="card-content">
-                    <div class="content nice-text">
-                      <ul id="recentPosts"></ul>
-                    </div>
+        <div class="column is-4">
+          <div class="sidebar">
+
+            <div class="widget">
+              <div class="card">
+                <header class="card-header">
+                  <p class="card-header-title nice-title">
+                  Recent Posts
+                  </p>
+                </header>
+                <div class="card-content">
+                  <div class="content nice-text">
+                    <ul id="recentPosts"></ul>
                   </div>
                 </div>
               </div>
+            </div>
 
-              {% include authors.html %}
+            {% include authors.html %}
 
-            </div>
           </div>
         </div>
       </div>
diff --git a/assets/css/custom.css b/assets/css/custom.css
index a99a056..138da50 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -220,52 +220,6 @@ blockquote {
   border-left: 5px solid var(--bulma-border-weak);
 }
 
-/*
- * Tile system shim — Bulma 1.x removed the .tile layout primitives.
- * This restores enough of the Bulma 0.9 tile behavior to keep the existing
- * layouts working. Remove when templates migrate to Bulma 1.x .columns.
- */
-.tile {
-  align-items: stretch;
-  display: block;
-  flex-basis: 0;
-  flex-grow: 1;
-  flex-shrink: 1;
-  min-height: min-content;
-}
-.tile.is-ancestor {
-  margin: -0.75rem;
-}
-.tile.is-vertical {
-  flex-direction: column;
-}
-.tile.is-vertical > .tile.is-child:not(:last-child) {
-  margin-bottom: 1.5rem !important;
-}
-@media screen and (min-width: 769px) {
-  .tile:not(.is-child) {
-    display: flex;
-  }
-  .tile.is-1 { flex: none; width: 8.3333333333%; }
-  .tile.is-2 { flex: none; width: 16.6666666667%; }
-  .tile.is-3 { flex: none; width: 25%; }
-  .tile.is-4 { flex: none; width: 33.3333333333%; }
-  .tile.is-5 { flex: none; width: 41.6666666667%; }
-  .tile.is-6 { flex: none; width: 50%; }
-  .tile.is-7 { flex: none; width: 58.3333333333%; }
-  .tile.is-8 { flex: none; width: 66.6666666667%; }
-  .tile.is-9 { flex: none; width: 75%; }
-  .tile.is-10 { flex: none; width: 83.3333333333%; }
-  .tile.is-11 { flex: none; width: 91.6666666667%; }
-  .tile.is-12 { flex: none; width: 100%; }
-}
-.tile.is-parent {
-  padding: 0.75rem;
-}
-.tile.is-child {
-  margin: 0 !important;
-}
-
 div.note {
   border: 1px solid var(--bulma-border);
   background: #fffef4;  /* a really pale yellow */