diff --git a/include/docpp.hpp b/include/docpp.hpp
index 6150885..87773f2 100644
--- a/include/docpp.hpp
+++ b/include/docpp.hpp
@@ -43,6 +43,11 @@ namespace docpp {
                 std::pair<std::string, std::string> property{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Construct a new HTMLProperty object
                  * @param key The key of the property
@@ -96,6 +101,11 @@ namespace docpp {
                 std::vector<HTMLProperty> properties{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Get the properties of the element
                  * @return std::vector<HTMLProperty> The properties of the element
@@ -138,6 +148,11 @@ namespace docpp {
                 HTMLElementProperties properties{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Construct a new HTMLElement object
                  * @param tag The tag of the element
@@ -189,6 +204,11 @@ namespace docpp {
                 std::unordered_map<int, HTMLSection> sections{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Prepend an element to the section
                  * @param element The element to add
@@ -330,6 +350,11 @@ namespace docpp {
                 HTMLSection document{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Get the document
                  * @param std::string The type to return
@@ -376,6 +401,11 @@ namespace docpp {
                 std::pair<std::string, std::string> property{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Construct a new CSSProperty object
                  * @param key The key of the property
@@ -432,6 +462,11 @@ namespace docpp {
                 std::pair<std::string, std::vector<CSSProperty>> element{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Construct a new CSSElement object
                  * @param tag The tag of the element
@@ -485,6 +520,11 @@ namespace docpp {
                 std::vector<CSSElement> elements{};
             protected:
             public:
+                /**
+                 * @brief The npos value
+                 */
+                static const int npos = -1;
+
                 /**
                  * @brief Construct a new CSSStylesheet object
                  * @param elements The elements to set
diff --git a/src/docpp.cpp b/src/docpp.cpp
index 452e1a4..23b7ef4 100644
--- a/src/docpp.cpp
+++ b/src/docpp.cpp
@@ -252,7 +252,7 @@ int docpp::HTML::HTMLSection::find(const HTMLElement& element) {
         }
     }
 
-    throw std::out_of_range("Element not found");
+    return docpp::HTML::HTMLSection::npos;
 }
 
 int docpp::HTML::HTMLSection::find(const HTMLSection& section) {
@@ -264,7 +264,7 @@ int docpp::HTML::HTMLSection::find(const HTMLSection& section) {
         }
     }
 
-    throw std::out_of_range("Section not found");
+    return docpp::HTML::HTMLSection::npos;
 }
 
 int docpp::HTML::HTMLSection::size() const {
@@ -504,7 +504,7 @@ int docpp::CSS::CSSStylesheet::find(const CSSElement& element) {
         }
     }
 
-    throw std::out_of_range("Element not found");
+    return docpp::CSS::CSSStylesheet::npos;
 }
 
 int docpp::CSS::CSSStylesheet::size() const {