Right click on the ribbon and choose Customize the Ribbon…

Select text box. Go to ribbon under Shape Format. In the Share Styles section click on Shape Outline. Choose No Outline

Second Option is to select box. Under Shape Format and Shape Styles click on the Format Shape ( Or right click on the text box line and choose Format Shape)
Continue readingOn the ribbon choose View and under Show section choose Ruler

Protected view can be removed in File > Options > Trust Center > Trust Center Settings… > Protected View
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