Sign in 10 days, the font can be bold, and it can be red after 20 days. At this time, two buttons AB will appear in the upper right of the input box, A is red and B is bold.
1, set the font color.
Click the button as shown in the figure to set the input content to red.
2. Set the font to bold.
Click the "B" button in the above figure to make the input bold.