CSS缩写
font: 14px/1.3 Arial,sans-serif;
相当于
font-style: normal;
font-variant: normal;
font-weight: normal;
font-size: 14px;
line-height: 1.3;
font-family: Arial, sans-serif;
--------------------------------------------------
#nav, #nav ul {
相当于
list-style-type: none;
list-style-position: outside;
list-style-image: none;
--------------------------------------------------
background: url('menu_bg.png') no-repeat scroll 0 0 transparent;
相当于
background-image: url(menu_bg.png);
background-repeat-x: no-repeat;
background-repeat-y: no-repeat;
background-attachment: scroll;
background-position-x: 0px;
background-position-y: 0px;
background-origin: initial;
background-clip: initial; //初始
background-color: transparent; //透明
--------------------------------------------------
border-radius: 0 5px 5px 5px;
相当于
border-top-left-radius: 0px;
border-top-right-radius: 5px;
border-bottom-right-radius: 5px;
border-bottom-left-radius: 5px;
--------------------------------------------------
border-width: 0 2px 4px 1px;
相当于
border-top-width: 0px;
border-right-width: 2px;
border-bottom-width: 4px;
border-left-width: 1px;
--------------------------------------------------
border-width: 0 2px 1px;
相当于
border-top-width: 0px;
border-right-width: 2px;
border-bottom-width: 1px;
border-left-width: 2px;
