diff --git a/index.html b/index.html
index 1a138b6..35b743f 100644
--- a/index.html
+++ b/index.html
@@ -33,12 +33,15 @@ <h1>Grid Maker</h1>
       <div>
         <button id="add-row">Add Row</button>
         <button id="add-column">Add Column</button>
+        <button id="remove-row">Remove-Row</button>
+        <button id="remove-column">Remove-Column</button>
         <select id="color-select">
           <option value="red">Red</option>
           <option value="blue">Blue</option>
         </select>
         <button id="fill-grid">Fill Grid</button>
         <button id="clear-grid">Clear Grid</button>
+        <button id="fill-uncolored-cells">Fill Uncolored Cells</button>
       </div>
     </div>
   </body>
diff --git a/main.js b/main.js
index 79a0fd1..cb05efa 100644
--- a/main.js
+++ b/main.js
@@ -5,3 +5,129 @@ root.addEventListener("click", (event) => {
   console.log(event.target.tagName);
   console.log(event.target);
 });
+
+const addRow = document.getElementById("add-row");
+
+addRow.addEventListener("click", () =>
+{
+  const nmberOfColumns = document.getElementsByTagName("TR")[0].children.length;
+  
+  const newRow = document.createElement("TR");
+  document.getElementsByTagName("tbody")[0].appendChild(newRow);
+
+  for (let i = 0; i < nmberOfColumns; i++)
+  {
+    const newCell = document.createElement("TD");
+    newRow.appendChild(newCell);
+  }
+});
+
+const addColunm = document.getElementById("add-column");
+
+addColunm.addEventListener("click", () =>
+{
+  const nmberOfRows = document.getElementsByTagName("TR").length;
+
+  for (let i = 0; i < nmberOfRows; i++)
+  {
+    const newCell2 = document.createElement("TD")
+    document.getElementsByTagName("TR")[i].appendChild(newCell2);
+  }
+});
+
+const removeRow = document.getElementById("remove-row");
+
+removeRow.addEventListener("click", () =>
+{
+  const nmberOfRows = document.getElementsByTagName("TR").length;
+  const lastRow = document.getElementsByTagName("TR")[nmberOfRows - 1];
+  lastRow.remove();
+});
+
+const removeColunm = document.getElementById("remove-column");
+
+removeColunm.addEventListener("click", () =>
+{
+  const nmberOfRows = document.getElementsByTagName("TR").length;
+
+    for (let i = 0; i < nmberOfRows; i++)
+    {
+      const removeCell = document.getElementsByTagName("TR")[i];
+      removeCell.lastElementChild.remove();
+    }
+});
+
+const currentColor = document.getElementById("color-select");
+
+const colorCell = document.getElementsByTagName("table")[0];
+
+colorCell.addEventListener("click", (event) =>
+{
+  if (event.target.tagName === "TD")
+  {
+  event.target.style.backgroundColor = currentColor.value;
+  }
+});
+
+const fillUncoloredCells = document.getElementById("fill-uncolored-cells");
+
+fillUncoloredCells.addEventListener("click", () =>
+{
+    const cells = document.getElementsByTagName("TD").length;
+
+    for (let i = 0; i < cells; i++)
+    {
+      const currentCell = document.getElementsByTagName("TD")[i];
+      if (!currentCell.style.backgroundColor)
+      {
+        currentCell.style.backgroundColor = currentColor.value
+      }
+    }
+});
+
+
+const fillAllCells = document.getElementById("fill-grid");
+
+fillAllCells.addEventListener("click", () =>
+{
+  const cells = document.getElementsByTagName("TD").length;
+
+  for (let i = 0; i < cells; i++)
+  {
+    const currentCell = document.getElementsByTagName("TD")[i];
+    currentCell.style.backgroundColor = currentColor.value
+  }
+});
+
+const clearAllCells = document.getElementById("clear-grid");
+
+clearAllCells.addEventListener("click", () =>
+{
+  const cells = document.getElementsByTagName("TD").length;
+
+  for (let i = 0; i < cells; i++)
+  {
+    const currentCell = document.getElementsByTagName("TD")[i];
+    currentCell.style.backgroundColor = "";
+  }
+});
+
+let isMouseButtonDown = false;
+
+document.addEventListener("mousedown", () =>
+{
+  isMouseButtonDown = true;
+});
+
+document.addEventListener("mouseup", () =>
+{
+  isMouseButtonDown = false;
+});
+
+document.addEventListener("mouseover", (event) =>
+{
+  if (isMouseButtonDown && event.target.tagName === "TD")
+  {
+    event.target.style.backgroundColor = currentColor.value;
+  }
+});
\ No newline at end of file