diff --git a/index.html b/index.html
index a963cb2..ace00a3 100644
--- a/index.html
+++ b/index.html
@@ -29,13 +29,22 @@
 
 <body>
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 200">
-    <circle cx="150" cy="100" r="50" stroke="white" stroke-width="2" fill="none" />
+    <defs>
+      <!-- Definice šrafovacího vzoru: šikmé čáry v rozestupu 10 px -->
+      <pattern id="hatchPattern" width="10" height="10"
+               patternUnits="userSpaceOnUse" patternTransform="rotate(45)">
+        <line x1="0" y1="0" x2="0" y2="10"
+              stroke="white" stroke-width="1"/>
+      </pattern>
+    </defs>
+    <circle cx="150" cy="100" r="50" stroke="white" stroke-width="2" fill="url(#hatchPattern)" />
+
 
-    <line x1="150" y1="100" x2="200" y2="100" stroke="#FF204E" stroke-width="1.5" />
-    <line x1="200" y1="95" x2="200" y2="105" stroke="white" stroke-width="1" />
     <line x1="150" y1="95" x2="150" y2="105" stroke="white" stroke-width="1" />
+    <line x1="145" y1="100" x2="155" y2="100" stroke="white" stroke-width="1" />
+    <line x1="150" y1="100" x2="200" y2="100" stroke="#FF204E" stroke-width="1.5" />
 
-    <text x="175" y="90" font-size="12" fill="#FF204E">x</text>
+    <text x="170" y="95" font-size="16" fill="#FF204E">x</text>
 
     <text x="75" y="180" font-size="18" fill="white">A = π ⋅ x²</text>
 </svg>
