If you had applied some formatting to the worksheet and feel that the gridlines that appear by default seem disturbing to your formatting then you may turn off the gridlines. Perform the following steps to turn off the gridlines:
1. In Microsoft Excel, click the View tab.
2. In the Show section, click to clear the checkmark beside Gridlines.
Please note that the turning on or off the gridlines applies only to a particular worksheet. If you need to turn off the gridlines to another worksheet then you have to activate that particular worksheet by clicking on the worksheet tab and performing the two steps provided above.