You can draw or add border and lines in Excel 2010 which are visual enhancement that you can add around groups of cells. You can visually specify a cell, a group of cells or range for creating border lines around cell which you can do directly using Font group on the Home tab.
How to add border and lines in Excel 2010
First Method: Using Ribbon
Step 1: Select cell on your worksheet.
Step 2: Choose Home➪ Font➪ Borders drop- down list.
You may choose different options to draw border lines and select different colors around border then you must choose Draw Borders on Borders shortcut menu. You can draw borders dragging you mouse and change border color also from Draw Borders command.
Example: Different border color and style
Second Method: Format Cells dialog box
Step 1: Select cells.
Step 2: Right click on selected cells and again click on Format Cells on Shortcut menu.
Step 3: Select Border tab from Format Cells dialog box.
Now you can choose Line Style, color and border line option from dialog box.
If you want to remove all borders and lines, you may choose None from Presets.