feat: Add background images and styles for school categories in main template

Website/templates/main.html

@@ -443,6 +443,24 @@
 		color: #7c8f8c;
 	}
 
+	#grundschule {
+		background:
+			linear-gradient(114deg, rgba(17, 57, 63, 0.9) 0%, rgba(30, 92, 99, 0.78) 42%, rgba(244, 248, 242, 0.92) 100%),
+			url("{{ url_for('static', filename='images/Gemini_Generated_Image_mrmegrmrmegrmrme.png') }}") center/cover no-repeat;
+	}
+	
+	#weiterführende-schulen {
+		background:
+			linear-gradient(114deg, rgba(17, 57, 63, 0.9) 0%, rgba(30, 92, 99, 0.78) 42%, rgba(244, 248, 242, 0.92) 100%),
+			url("{{ url_for('static', filename='images/Gemini_Generated_Image_yjhhheyjhhheyjhh.png') }}") center/cover no-repeat;
+	}
+
+	#oberschulen {
+		background:
+			linear-gradient(114deg, rgba(17, 57, 63, 0.9) 0%, rgba(30, 92, 99, 0.78) 42%, rgba(244, 248, 242, 0.92) 100%),
+			url("{{ url_for('static', filename='images/Gemini_Generated_Image_qc97wfqc97wfqc97.png') }}") center/cover no-repeat;
+	}
+
 	.primary-focus {
 		margin-top: 2rem;
 		border-radius: 20px;