Zmiany

style.css

@@ -6,16 +6,13 @@ body {
 
 header {
     box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
-    margin-top: 0px;
-    padding: 0 10px 0 10px;
-    width: 100%;
-    top: 0;
-    left: 0;
+    padding: 5px 30px;
     z-index: 99;
     background: #fff;
-    transition: all 0.3s ease;
     height: 60px;
-    position: fixed;
+    border-radius: 8px;
+    display: flex;
+    justify-content: space-between;
 }
 
 header img {    
@@ -25,8 +22,7 @@ header img {
 
 header nav {
     display: flex;
-    gap: 1rem;
-    flex-wrap: wrap;
+    margin-top: 10px;
 }
 
 header nav a {
@@ -51,6 +47,14 @@ header nav a:hover {
     text-decoration: none;
 }
 
+details {
+    background-color: white;
+}
+
+summary {
+    background-color: white;
+}
+
 article {
     color: #1A161A;
     background-color: white;
@@ -66,10 +70,6 @@ article#kontakt {
     background-repeat: no-repeat;  /* Prevent tiling */
 }
 
-article#oferta {
-    height: 20px;
-}
-
 h1, h2, h3 {
     color: #1A161A;
 }