How do i change the background color of the communication site that i inserted table in a text web part to be no color(No gray or any other color).
You can change the table style to Plain. Select the table and change it to the first style (Plain).
If your table is pasted from the Word/Excel, we cannot change its style using Text and table formatting toolbar.
You need to format it in the Word/Excel, then copy the table from the Word/Excel and paste it to the Text web part on the modern page.