У вашего броузера проблема в совместимости с HTML5
A Drop Down List is extremely useful in Excel. However, If we have hundreds of values it becomes difficult to find the specific value we are looking for. In this tutorial you'll learn how to shrink your list to fewer options by typing few characters and your drop down list will show only options relevant to what you typed.
You can download the exercise file by clicking on the link:
https://www.amazon.ca/clouddrive/share/7cb7Cpgba8vWzRnoVoKoEivSqxb6uuHz7Y4tabBZ9Ua
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