diff --git a/assets/favicon.ico b/assets/favicon.ico
index be340ff..6606859 100644
Binary files a/assets/favicon.ico and b/assets/favicon.ico differ
diff --git a/xlsx/examples/hello_calc.rs b/xlsx/examples/hello_calc.rs
new file mode 100644
index 0000000..9269e5c
--- /dev/null
+++ b/xlsx/examples/hello_calc.rs
@@ -0,0 +1,28 @@
+use ironcalc::{
+    base::{expressions::utils::number_to_column, model::Model},
+    export::save_to_xlsx,
+};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut model = Model::new_empty("hello-calc.xlsx", "en", "UTC")?;
+    // Adds a square of numbers in the first sheet
+    for row in 1..100 {
+        for column in 1..100 {
+            let value = row * column;
+            model.set_user_input(0, row, column, format!("{}", value));
+        }
+    }
+    // Adds a new sheet
+    model.add_sheet("Calculation")?;
+    // column 100 is CV
+    let last_column = number_to_column(100).unwrap();
+    let formula = format!("=SUM(Sheet1!A1:{}100)", last_column);
+    model.set_user_input(1, 1, 1, formula);
+
+    // evaluates
+    model.evaluate();
+
+    // saves to disk
+    save_to_xlsx(&model, "hello-calc.xlsx")?;
+    Ok(())
+}
diff --git a/xlsx/examples/hello_styles.rs b/xlsx/examples/hello_styles.rs
new file mode 100644
index 0000000..9157437
--- /dev/null
+++ b/xlsx/examples/hello_styles.rs
@@ -0,0 +1,22 @@
+use ironcalc::{base::model::Model, export::save_to_xlsx};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut model = Model::new_empty("hello_styles", "en", "UTC")?;
+
+    // We are going to change styles in cell A1
+    let sheet = 0;
+    let row = 1;
+    let column = 1;
+    let mut style = model.get_style_for_cell(sheet, row, column);
+    style.fill.fg_color = Some("#FFEE11".to_string());
+    style.font.b = true;
+    style.font.color = Some("#EEFF22".to_string());
+    model.set_cell_style(sheet, row, column, &style)?;
+
+    // evaluates (unnecessary in this case)
+    model.evaluate();
+
+    // saves to disk
+    save_to_xlsx(&model, "hello-styles.xlsx")?;
+    Ok(())
+}
diff --git a/xlsx/examples/widths_and_heights.rs b/xlsx/examples/widths_and_heights.rs
new file mode 100644
index 0000000..24eabb6
--- /dev/null
+++ b/xlsx/examples/widths_and_heights.rs
@@ -0,0 +1,23 @@
+use ironcalc::{base::model::Model, export::save_to_xlsx};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut model = Model::new_empty("widths-and-heights", "en", "UTC")?;
+    // Cell C5
+    let column = 3;
+    let row = 5;
+    // Make the first column 4 times as width
+    let worksheet = model.workbook.worksheet_mut(0)?;
+    let column_width = worksheet.column_width(column)? * 4.0;
+    worksheet.set_column_width(column, column_width)?;
+
+    // and the first row twice as high.
+    let row_height = worksheet.row_height(row)? * 2.0;
+    worksheet.set_row_height(row, row_height)?;
+
+    // evaluates
+    model.evaluate();
+
+    // saves to disk
+    save_to_xlsx(&model, "widths-and-heights.xlsx")?;
+    Ok(())
+}
diff --git a/xlsx/src/lib.rs b/xlsx/src/lib.rs
index f45cc9a..13b4db5 100644
--- a/xlsx/src/lib.rs
+++ b/xlsx/src/lib.rs
@@ -3,7 +3,7 @@
 //! This technical API documentation in aimed at developers who want to develop bindings for a different language,
 //! build a UI based on the engine or just use the library in a Rust program
 //!
-//! ## Usage
+//! ## Basic usage
 //!
 //! Add the dependency in `Cargo.toml`:
 //!
@@ -14,45 +14,27 @@
 //!
 //! <small> until version 0.5.0 you should use the git dependencies as stated </small>
 //!
-//! A simple example:
+//! A simple example with some numbers, a new sheet and a formula:
 //!
 //!
 //! ```rust
-//! use ironcalc::{
-//! base::{expressions::utils::number_to_column, model::Model},
-//! export::save_to_xlsx,
-//! };
-//!
-//! fn main() -> Result<(), Box<dyn std::error::Error>> {
-//! let mut model = Model::new_empty("hello-calc.xlsx", "en", "UTC")?;
-//! // Adds a square of numbers in the first sheet
-//! for row in 1..100 {
-//!     for column in 1..100 {
-//!         let value = row * column;
-//!         model.set_user_input(0, row, column, format!("{}", value));
-//!     }
-//! }
-//! // Adds a new sheet
-//! model.add_sheet("Calculation")?;
-//! // column 100 is CV
-//! let last_column = number_to_column(100).unwrap();
-//! let formula = format!("=SUM(Sheet1!A1:{}100)", last_column);
-//! model.set_user_input(1, 1, 1, formula);
-//!
-//! // evaluates
-//! model.evaluate();
-//!
-//! // saves to disk
-//! save_to_xlsx(&model, "hello-calc.xlsx")?;
-//! Ok(())
-//! }
+#![doc = include_str!("../examples/hello_calc.rs")]
 //! ```
 //!
-//! You can then just:
+//! ## Styling the workbook
 //!
-//! ```bash
-//! cargo run
+//! Adding colors, to cells, full columns or full rows is easy
+//!
+//! ```rust
+#![doc = include_str!("../examples/hello_styles.rs")]
 //! ```
+//!
+//! Changing column width and row heigh
+//!
+//! ```rust
+#![doc = include_str!("../examples/widths_and_heights.rs")]
+//! ```
+//!  
 
 #![doc(
     html_logo_url = "https://raw.githubusercontent.com/ironcalc/ironcalc/main/assets/logo.png",