increase font size

Author: lindalu-MSFT

docs/reference/javascript-api-for-office.md

@@ -19,9 +19,9 @@ You should use application-specific APIs whenever feasible, and use Common APIs
 
 ## API reference
 
-|                           |                      |           |
+|                           |                      |                 |
 | :------------------------ | -------------------- | ----------------|
-| <img src="../images/index/logo-excel.svg" width="100"> </br>**Excel API reference**</br>[JavaScript APIs for building Excel add-ins](/javascript/api/excel).  | <img src="../images/index/logo-outlook.svg" width="100"> </br>**Outlook API reference**</br>[JavaScript APIs for building Outlook add-ins](/javascript/api/outlook). | <img src="../images/index/logo-word.svg" width="100"> </br>**Word API reference**</br>[JavaScript APIs for building Word add-ins](/javascript/api/word). |
-| <img src="../images/index/logo-powerpoint.svg" width="100"> </br>**PowerPoint API reference**</br>[JavaScript APIs for building PowerPoint add-ins](/javascript/api/powerpoint).  | <img src="../images/index/logo-onenote.svg" width="100"> </br>**OneNote API reference**</br>[JavaScript APIs for building OneNote add-ins](/javascript/api/onenote). | <img src="../images/index/logo-office.png" width="100"> </br>**Common API reference**</br>[JavaScript APIs that can be used by any Office Add-in](/javascript/api/office). |
+| <img src="../images/index/logo-excel.svg" width="100"> </br><font size="4">**Excel API reference**</font></br>[JavaScript APIs for building Excel add-ins](/javascript/api/excel).  | <img src="../images/index/logo-outlook.svg" width="100"> </br><font size="4">**Outlook API reference**</font></br>[JavaScript APIs for building Outlook add-ins](/javascript/api/outlook). | <img src="../images/index/logo-word.svg" width="100"> </br><font size="4">**Word API reference**</font></br>[JavaScript APIs for building Word add-ins](/javascript/api/word). |
+| <img src="../images/index/logo-powerpoint.svg" width="100"> </br><font size="4">**PowerPoint API reference**</font></br>[JavaScript APIs for building PowerPoint add-ins](/javascript/api/powerpoint).  | <img src="../images/index/logo-onenote.svg" width="100"> </br><font size="4">**OneNote API reference**</font></br>[JavaScript APIs for building OneNote add-ins](/javascript/api/onenote). | <img src="../images/index/logo-office.png" width="100"> </br><font size="4">**Common API reference**</font></br>[JavaScript APIs that can be used by any Office Add-in](/javascript/api/office). |
 
 **Note**: There's currently no application-specific JavaScript API for Project; you'll use Common APIs to create Project add-ins.