Border

.abc { border: 1px solid blue ;}

The above will create a solid border of 1px with blue color, you can also go for HEX value(#0000FF) for colors.

.deg { border: 5px solid; }

The above will create a solid border of 5px, and it will take the default color as the color is not seted.

.hij{ border: dotted; }

The above will create a dotted border.

Other styles are,..

solid
{border-style: solid; }

double
{border-style: double; }

groove
{border-style: groove; }

dotted
{border-style: dotted; }

dashed
{border-style: dashed; }

inset
{border-style: inset; }

outset
{border-style: outset; }

ridge
{border-style: ridge; }

hidden
{border-style: hidden; }