Bordas

border: 1px solid #aaaaaa;

border: 1px dotted #ff8833;

border: 2px dashed #660000;

border: 3px double #990000;

border: 5px groove #006600;

border: 10px ridge #6666cc;

border: 10px inset #0000ff;

border: 10px outset #cccccc;