Looking at all the closed posts in this forum, I hope this one will not join them.
For me, I always try and have my posts in a certain font and text size and color.
Every single post I make, I have to Swipe all the text, Change the font size, Change the color, Change the font, Change the placing of the text (Middle, Left Right), then Italicize it.
It begins to seem like a royal pain. Anyways.... in the control pannel, there should be a settings box where you type something like "Default" then edit it.
So like, if i wanted everything i type to be purple, bolded, and Georgia font, I would put
Default
Then click Save changes; just an idea, keep flaming to a minimum.