diff --git a/packages/schema/src/config/app.ts b/packages/schema/src/config/app.ts
index 7ef5c4d79a6d..67feb7defca4 100644
--- a/packages/schema/src/config/app.ts
+++ b/packages/schema/src/config/app.ts
@@ -199,45 +199,30 @@ export default defineUntypedSchema({
    *
    * @example ~/app/spa-loading-template.html
    * ```html
-   * <!-- https://github.com/barelyhuman/snips/blob/dev/pages/css-loader.md -->
+   * <!-- https://gist.github.com/davidglezz/85a2e6185edbd0873a5a2bdb2ce1cd36 -->
    * <div class="loader"></div>
    * <style>
-   * .loader {
-   *   display: block;
-   *   position: fixed;
-   *   z-index: 1031;
-   *   top: 50%;
-   *   left: 50%;
-   *   transform: translate(-50%, -50%);
-   *   width: 18px;
-   *   height: 18px;
-   *   box-sizing: border-box;
-   *   border: solid 2px transparent;
-   *   border-top-color: #000;
-   *   border-left-color: #000;
-   *   border-bottom-color: #efefef;
-   *   border-right-color: #efefef;
-   *   border-radius: 50%;
-   *   -webkit-animation: loader 400ms linear infinite;
-   *   animation: loader 400ms linear infinite;
-   * }
-   *
-   * \@-webkit-keyframes loader {
-   *   0% {
-   *     -webkit-transform: translate(-50%, -50%) rotate(0deg);
-   *   }
-   *   100% {
-   *     -webkit-transform: translate(-50%, -50%) rotate(360deg);
+   *   .loader {
+   *     --size: 5rem;
+   *     --weight: .5rem;
+   *     --background: rgba(127, 127, 127, .1);
+   *     --color: rgba(127, 127, 127, .9);
+   *     --duration: 1s;
+   *     position: fixed;
+   *     top: calc(50% - var(--size) / 2);
+   *     left: calc(50% - var(--size) / 2);
+   *     width: var(--size);
+   *     height: var(--size);
+   *     box-sizing: border-box;
+   *     border: solid var(--weight) var(--background);
+   *     border-top-color: var(--color);
+   *     border-radius: 50%;
+   *     animation: loader var(--duration) linear infinite;
    *   }
-   * }
-   * \@keyframes loader {
-   *   0% {
-   *     transform: translate(-50%, -50%) rotate(0deg);
-   *   }
-   *   100% {
-   *     transform: translate(-50%, -50%) rotate(360deg);
+   *
+   *   @keyframes loader {
+   *     to { transform: rotate(360deg); }
    *   }
-   * }
    * </style>
    * ```
    * @type {string | boolean}