Helpful things! (Changing the box’s colors)

So lets start with a box or what’s called a card in bootstrap

For changing the colors of a card always look at the style
Color: #HEXCODE; is always the text in the card
Border-color: #HEXCODE; is the color of the card border
Background-color: #HEXCODE; is the color of the background

Ok cool but lets say I want the background to be green with yellow text and a blue border?
And where can I even find what hex code I want?

One place to start is Colorhexa.com. I personally use this site when picking the colors for my own pages
Another site, if maybe you have the colors on an image, is html-color-codes.info. I also use this site often when making codes for myself

Now for your box:

It’s code looks like:
<div class=" card card-block " style="Color:#fff09d;Border-color:#274959;Background-color:#89a33d;">Yellow text!</div>