復合寫法：

border: 2px solid red;

分開寫法：

border-color: red;

border-bottom-color: blue;

border-bottom-style: dotted;

border-bottom-width: 5px;

border-left-color: yellow;

border-left-style: solid;

border-left-width: 6px;

border-right-color: green;

border-right-style: dashed;

border-right-width: 4px;

border-style: dashed;

border-style: dotted;

border-style: solid;

border-top-color: red;

border-top-style: solid;

border-top-width: 3px;

border-width: 5px;

1、HTML+DIV+CSS零基礎快速入門到制作企業站視頻課程_12 css邊框