feat: css drop-shadow for logo

Author: flemay

src/styles/global.css

@@ -14,6 +14,7 @@
   --sl-color-gray-6: #182a2f;
   --sl-color-black: #121a1c;
 }
+
 /* Light mode colors. */
 :root[data-theme="light"] {
   --sl-color-accent-low: #b0deff;
@@ -29,3 +30,7 @@
   --sl-color-gray-7: #f3f7f9;
   --sl-color-black: #ffffff;
 }
+
+div.hero > img {
+  filter: drop-shadow(2px 4px 6px var(--sl-color-text-accent));
+}