diff --git a/datasette/static/app.css b/datasette/static/app.css
index 3b0546e3..f04e6356 100644
--- a/datasette/static/app.css
+++ b/datasette/static/app.css
@@ -1,3 +1,138 @@
+/* Shared modal styles. */
+datasette-modal {
+    display: contents;
+}
+
+dialog.datasette-modal {
+    --ink: #0f0f0f;
+    --paper: #eef6ff;
+    --muted: #6b6b6b;
+    --rule: #d8e6f5;
+    --accent: #1a56db;
+    --card: #ffffff;
+    border: none;
+    border-radius: var(--modal-border-radius, 0.75rem);
+    padding: 0;
+    margin: auto;
+    width: min(520px, calc(100vw - 32px));
+    max-width: 95vw;
+    max-height: calc(100dvh - 32px);
+    box-shadow: var(--modal-shadow, 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04));
+    animation: datasette-modal-slide-in var(--modal-animation-duration, 0.2s) ease-out;
+    overflow: hidden;
+    font-family: system-ui, -apple-system, sans-serif;
+    background: var(--card);
+}
+
+dialog.datasette-modal[open] {
+    display: flex;
+    flex-direction: column;
+}
+
+dialog.datasette-modal::backdrop {
+    background: var(--modal-backdrop-bg, rgba(0, 0, 0, 0.5));
+    backdrop-filter: var(--modal-backdrop-blur, blur(4px));
+    -webkit-backdrop-filter: var(--modal-backdrop-blur, blur(4px));
+    animation: datasette-modal-fade-in var(--modal-animation-duration, 0.2s) ease-out;
+}
+
+@keyframes datasette-modal-slide-in {
+    from { opacity: 0; transform: translateY(-20px) scale(0.95); }
+    to { opacity: 1; transform: translateY(0) scale(1); }
+}
+
+@keyframes datasette-modal-fade-in {
+    from { opacity: 0; }
+    to { opacity: 1; }
+}
+
+:where(.datasette-modal) .modal-header {
+    padding: 20px 24px 12px;
+    border-bottom: 1px solid var(--rule);
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    flex-shrink: 0;
+    min-width: 0;
+}
+
+:where(.datasette-modal) .modal-title {
+    font-size: 1rem;
+    font-weight: 600;
+    color: var(--ink);
+}
+
+:where(.datasette-modal) .modal-meta {
+    font-family: ui-monospace, monospace;
+    font-size: 0.7rem;
+    color: var(--muted);
+    background: var(--paper);
+    padding: 3px 9px;
+    border-radius: 20px;
+}
+
+:where(.datasette-modal) .modal-footer {
+    padding: 14px 20px;
+    border-top: 1px solid var(--rule);
+    display: flex;
+    align-items: center;
+    justify-content: flex-end;
+    gap: 10px;
+    flex-shrink: 0;
+    background: var(--paper);
+}
+
+:where(.datasette-modal) .footer-info {
+    flex: 1;
+    font-family: ui-monospace, monospace;
+    font-size: 0.68rem;
+    color: var(--muted);
+}
+
+:where(.datasette-modal) .modal-btn {
+    border: none;
+    border-radius: 5px;
+    padding: 9px 20px;
+    font-size: 0.85rem;
+    font-weight: 500;
+    cursor: pointer;
+    touch-action: manipulation;
+    font-family: inherit;
+    transition: background 0.12s;
+}
+
+:where(.datasette-modal) .modal-btn-ghost {
+    background: transparent;
+    color: var(--muted);
+    border: 1px solid var(--rule);
+}
+
+:where(.datasette-modal) .modal-btn-ghost:hover {
+    background: var(--rule);
+    color: var(--ink);
+}
+
+:where(.datasette-modal) .modal-btn-primary {
+    background: var(--accent);
+    color: #fff;
+}
+
+:where(.datasette-modal) .modal-btn-primary:hover {
+    background: #1949b8;
+}
+
+:where(.datasette-modal) .modal-btn:disabled {
+    opacity: 0.65;
+    cursor: wait;
+}
+
+@media (prefers-reduced-motion: reduce) {
+    dialog.datasette-modal,
+    dialog.datasette-modal::backdrop {
+        animation: none;
+    }
+}
+
 /* Reset and Page Setup ==================================================== */
 
 /* Reset from http://meyerweb.com/eric/tools/css/reset/
diff --git a/datasette/static/modal.css b/datasette/static/modal.css
deleted file mode 100644
index aeec561f..00000000
--- a/datasette/static/modal.css
+++ /dev/null
@@ -1,134 +0,0 @@
-/* Shared modal styles. */
-datasette-modal {
-    display: contents;
-}
-
-dialog.datasette-modal {
-    --ink: #0f0f0f;
-    --paper: #eef6ff;
-    --muted: #6b6b6b;
-    --rule: #d8e6f5;
-    --accent: #1a56db;
-    --card: #ffffff;
-    border: none;
-    border-radius: var(--modal-border-radius, 0.75rem);
-    padding: 0;
-    margin: auto;
-    width: min(520px, calc(100vw - 32px));
-    max-width: 95vw;
-    max-height: calc(100dvh - 32px);
-    box-shadow: var(--modal-shadow, 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04));
-    animation: datasette-modal-slide-in var(--modal-animation-duration, 0.2s) ease-out;
-    overflow: hidden;
-    font-family: system-ui, -apple-system, sans-serif;
-    background: var(--card);
-}
-
-dialog.datasette-modal[open] {
-    display: flex;
-    flex-direction: column;
-}
-
-dialog.datasette-modal::backdrop {
-    background: var(--modal-backdrop-bg, rgba(0, 0, 0, 0.5));
-    backdrop-filter: var(--modal-backdrop-blur, blur(4px));
-    -webkit-backdrop-filter: var(--modal-backdrop-blur, blur(4px));
-    animation: datasette-modal-fade-in var(--modal-animation-duration, 0.2s) ease-out;
-}
-
-@keyframes datasette-modal-slide-in {
-    from { opacity: 0; transform: translateY(-20px) scale(0.95); }
-    to { opacity: 1; transform: translateY(0) scale(1); }
-}
-
-@keyframes datasette-modal-fade-in {
-    from { opacity: 0; }
-    to { opacity: 1; }
-}
-
-:where(.datasette-modal) .modal-header {
-    padding: 20px 24px 12px;
-    border-bottom: 1px solid var(--rule);
-    display: flex;
-    align-items: center;
-    gap: 12px;
-    flex-shrink: 0;
-    min-width: 0;
-}
-
-:where(.datasette-modal) .modal-title {
-    font-size: 1rem;
-    font-weight: 600;
-    color: var(--ink);
-}
-
-:where(.datasette-modal) .modal-meta {
-    font-family: ui-monospace, monospace;
-    font-size: 0.7rem;
-    color: var(--muted);
-    background: var(--paper);
-    padding: 3px 9px;
-    border-radius: 20px;
-}
-
-:where(.datasette-modal) .modal-footer {
-    padding: 14px 20px;
-    border-top: 1px solid var(--rule);
-    display: flex;
-    align-items: center;
-    justify-content: flex-end;
-    gap: 10px;
-    flex-shrink: 0;
-    background: var(--paper);
-}
-
-:where(.datasette-modal) .footer-info {
-    flex: 1;
-    font-family: ui-monospace, monospace;
-    font-size: 0.68rem;
-    color: var(--muted);
-}
-
-:where(.datasette-modal) .modal-btn {
-    border: none;
-    border-radius: 5px;
-    padding: 9px 20px;
-    font-size: 0.85rem;
-    font-weight: 500;
-    cursor: pointer;
-    touch-action: manipulation;
-    font-family: inherit;
-    transition: background 0.12s;
-}
-
-:where(.datasette-modal) .modal-btn-ghost {
-    background: transparent;
-    color: var(--muted);
-    border: 1px solid var(--rule);
-}
-
-:where(.datasette-modal) .modal-btn-ghost:hover {
-    background: var(--rule);
-    color: var(--ink);
-}
-
-:where(.datasette-modal) .modal-btn-primary {
-    background: var(--accent);
-    color: #fff;
-}
-
-:where(.datasette-modal) .modal-btn-primary:hover {
-    background: #1949b8;
-}
-
-:where(.datasette-modal) .modal-btn:disabled {
-    opacity: 0.65;
-    cursor: wait;
-}
-
-@media (prefers-reduced-motion: reduce) {
-    dialog.datasette-modal,
-    dialog.datasette-modal::backdrop {
-        animation: none;
-    }
-}
diff --git a/datasette/templates/base.html b/datasette/templates/base.html
index b11d14f5..e5aa46f3 100644
--- a/datasette/templates/base.html
+++ b/datasette/templates/base.html
@@ -2,7 +2,6 @@
 <html lang="en">
 <head>
     <title>{% block title %}{% endblock %}</title>
-    <link rel="stylesheet" href="{{ static('modal.css') }}">
     <link rel="stylesheet" href="{{ static('app.css') }}">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 {% for url in extra_css_urls %}