diff --git a/public/admin/assets/js/ops/core.js b/public/admin/assets/js/ops/core.js
index 9ef9321..3f4611a 100644
--- a/public/admin/assets/js/ops/core.js
+++ b/public/admin/assets/js/ops/core.js
@@ -1,6 +1,31 @@
 // Shared plumbing: htm binding, hash router, polling fetch, formatters.
 const { createElement, useState, useEffect, useRef, useCallback } = React;
-export const html = htm.bind(createElement);
+
+// htm hands props straight through, and React refuses a style string (error #62).
+// Writing style objects everywhere in tagged templates is miserable, so convert
+// once here instead and let the views keep using plain css.
+function cssToObject(css) {
+  const style = {};
+  for (const declaration of String(css).split(';')) {
+    const split = declaration.indexOf(':');
+    if (split === -1) continue;
+    const property = declaration.slice(0, split).trim();
+    const value = declaration.slice(split + 1).trim();
+    if (!property || !value) continue;
+    // custom properties have to stay verbatim, the rest camelCase
+    style[property.startsWith('--') ? property : property.replace(/-([a-z])/g, (_, c) => c.toUpperCase())] = value;
+  }
+  return style;
+}
+
+function h(type, props, ...children) {
+  if (props && typeof props.style === 'string') {
+    return createElement(type, { ...props, style: cssToObject(props.style) }, ...children);
+  }
+  return createElement(type, props, ...children);
+}
+
+export const html = htm.bind(h);
 export { useState, useEffect, useRef, useCallback };
 
 export async function api(path, options = {}) {