Color in CSS refers to the color of your text..
For this lesson the you need to change the color of the border ..
If you see in your instructions it says color dashed and 2px or 3px whatever you like
So you need to do this:
border: 2px dashed #3A5FCD;
There are two proper ways to define a border, using the border: property:
border: width style color;
and using the individual property's:
border-width: width; border-color: color; border-style: style;
style, width and color are placeholder values. You choice your method, just make sure to specify all three with the right values