Add jenkinsfile to verify CSS, fix errors

Jenkinsfile

@@ -0,0 +1,35 @@
+pipeline {
+    agent any
+
+    stages {
+		stage('Check Indentation') {
+            steps {
+                script {
+                    // Check for spaces or mixed indentation
+                    sh '''
+                    if grep -P "^[ ]+" -r path/to/your/css/files; then
+                        echo "Error: Files contain spaces instead of tabs for indentation."
+                        exit 1
+                    fi
+                    if grep -P "^\\t+ +" -r path/to/your/css/files; then
+                        echo "Error: Files contain mixed tabs and spaces for indentation."
+                        exit 1
+                    fi
+                    echo "No indentation errors detected."
+                    '''
+                }
+            }
+		}
+        stage('Validate CSS Syntax') {
+            steps {
+                script {
+                    sh 'stylelint ./**/*.css'
+                }
+            }
+        }
+    }
+}
+
+
+
+