feat: optimize image hash

public/app.css

@@ -25,7 +25,6 @@ article a,
   color: var(--fill) !important;
 }
 
-
 .dark .noise::before {
   opacity: 1;
 }
@@ -65,3 +64,34 @@ video {
 article iframe {
   border-radius: 10px;
 }
+
+picture.thumb::before {
+  content: "";
+  position: absolute;
+  bottom: 10px;
+  right: 10px;
+  width: 30px;
+  height: 30px;
+  opacity: 0;
+  transition: opacity 0.3s;
+  pointer-events: none;
+  animation: spin 1s linear infinite;
+  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' class='icon icon-tabler icons-tabler-outline icon-tabler-loader-2'%3E%3Cpath stroke='none' d='M0 0h24v24H0z' fill='none'/%3E%3Cpath d='M12 3a9 9 0 1 0 9 9' /%3E%3C/svg%3E");
+  background-size: cover;
+  z-index: 2;
+}
+
+
+picture.thumb-loading::before {
+  opacity: 0.5;
+}
+
+@keyframes spin {
+  0% {
+    transform: rotate(0deg);
+  }
+
+  100% {
+    transform: rotate(360deg);
+  }
+}