initial class names support!

.editorconfig

@@ -0,0 +1,5 @@
+root = true
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true

composer.json

@@ -26,7 +26,8 @@
     "phenx/php-font-lib": "^0.5.1",
     "guzzlehttp/guzzle": "^6.3",
     "composer/ca-bundle": "^1.1",
-    "milon/barcode": "^5.3"
+    "milon/barcode": "^5.3",
+    "sabberworm/php-css-parser": "^8.3"
   },
   "autoload": {
     "psr-4": {

lib/Document.php

@@ -140,6 +140,12 @@ class Document
 	 * @var array
 	 */
 	protected $ordCache = [];
+	/**
+	 * Css selectors like classes ids.
+	 *
+	 * @var array
+	 */
+	protected $cssSelectors = [];
 
 	/**
 	 * Are we debugging?
@@ -877,4 +883,51 @@ public function render(): string
 
 		return $this->buffer;
 	}
+
+	/**
+	 * Get css selector rules.
+	 *
+	 * @param string $selector
+	 *
+	 * @return array
+	 */
+	public function getCssSelectorRules(string $selector)
+	{
+		$rules = [];
+		foreach(explode(' ',$selector) as $className){
+			if ($className && isset($this->cssSelectors[$className])) {
+				$rules = array_merge($rules,$this->cssSelectors[$className]);
+			}
+		}
+
+		return $rules;
+	}
+
+	/**
+	 * Get css selectors.
+	 *
+	 * @return array
+	 */
+	public function getCssSelectors()
+	{
+		return $this->cssSelectors;
+	}
+
+	/**
+	 * Add css selector rules.
+	 *
+	 * @param string $selector .className or #id
+	 * @param array  $rules
+	 *
+	 * @return $this
+	 */
+	public function addCssSelectorRules(string $selector, array $rules): self
+	{
+		if (isset($this->cssSelectors[$selector])) {
+			$this->cssSelectors[$selector] = array_merge($this->cssSelectors[$selector], $rules);
+		} else {
+			$this->cssSelectors[$selector] = $rules;
+		}
+		return $this;
+	}
 }

lib/Html/Element.php

@@ -40,6 +40,12 @@ class Element extends \YetiForcePDF\Base
 	 * @var \DOMElement
 	 */
 	protected $domElement;
+	/**
+	 * Class names for element
+	 *
+	 * @var  string
+	 */
+	protected $classNames = '';
 
 	/**
 	 * Initialisation.
@@ -170,4 +176,28 @@ public function isTextNode()
 		}
 		return false;
 	}
+
+	/**
+	 * Set class names for element
+	 *
+	 * @param  string  $classNames  Class names for element
+	 *
+	 * @return  self
+	 */
+	public function setClassNames(string $classNames)
+	{
+		$this->classNames = $classNames;
+
+		return $this;
+	}
+
+	/**
+	 * Get class names for element
+	 *
+	 * @return  string[]
+	 */
+	public function getClassNames()
+	{
+		return $this->classNames;
+	}
 }