superfish代码注释
/*** ESSENTIAL STYLES ***/ .sf-menu, .sf-menu * {/*一级菜单与周围元素的距离*/ margin: 0; padding: 0; list-style: none; } .sf-menu li { position: relative; } .sf-menu ul { position: absolute; display: none; top: 100%; left: 0; z-index: 99; } .sf-menu > li { float: left; } .sf-menu li:hover > ul, .sf-menu li.sfHover > ul { display: block; } .sf-menu a { display: block; position: relative; } .sf-menu ul ul { top: 0; left: 95%;/*负责易做图菜单的位置*/ } /*** DEMO SKIN ***/ .sf-menu { float: left; margin-bottom: 0px; } .sf-menu ul { box-shadow: 2px 2px 6px rgba(0,0,0,.2); min-width: 12em; /* allow long menu items to determine submenu width */ *width: 12em; /* no auto sub width for IE7, see white-space comment below */ } .sf-menu a { border-left: 0px solid #fff; border-top: 0px solid #dFeEFF; /*菜单之间上下间距fallback colour must use full shorthand */ border-top: 0px solid rgba(255,255,255,.5); padding: .75em 1em; text-decoration: none; zoom: 1; /* IE7 */ } .sf-menu a { color:black;/*菜单字体颜色*/ } .sf-menu li { background:#D3D3D3;/*一级菜单设置背景色*/ white-space: nowrap; /* no need for Supersubs plugin */ *white-space: normal; /* ...unless you support IE7 (let it wrap) */ -webkit-transition: background .1s; transition: background .1s;/*背景变换时间*/ } .sf-menu ul li { background: #D3D3D3;/*二级菜单背景颜色*/ } .sf-menu ul ul li { background: #D3D3D3;/*易做图菜单背景颜色*/ } .sf-menu li:hover, .sf-menu li.sfHover { background: #CFDEFF;/*鼠标停放时子菜单颜色*/ /* only transition out, not in */ -webkit-transition: none; transition: none; } /*** arrows (for all except IE7) **/ .sf-arrows .sf-with-ul { padding-right: 1.9em;/*一级菜单三角箭头距菜单文字左间距*/ *padding-right: 1em; /* no CSS arrows for IE7 (lack pseudo-elements) */ } /* styling for both css and generated arrows */ .sf-arrows .sf-with-ul:after { content: ''; position: absolute; top: 50%; right: 1em;/*负责菜单三角箭头左右位置*/ margin-top: -3px;/*负责菜单三角箭头上下位置*/ height: 0; width: 0; /* order of following 3 rules important for fallbacks to work */ border: 5px solid transparent;/*负责三角箭头的大小*/ border-top-color: #dFeEFF; /* edit this to suit design (no rgba in IE8) */ border-top-color: rgba(255,255,255,.5); } .sf-arrows > li > .sf-with-ul:focus:after, .sf-arrows > li:hover > .sf-with-ul:after, .sf-arrows > .sfHover > .sf-with-ul:after { border-top-color: white; /* IE8 fallback colour *//*负责一级三角箭头的颜色*/ } /* styling for right-facing arrows */ .sf-arrows ul .sf-with-ul:after { margin-top: -5px; margin-right: -3px; border-color: transparent; border-left-color: #dFeEFF; /*负责一级三角箭头的颜色,edit this to suit design (no rgba in IE8) */ border-left-color: rgba(255,255,255,.5); } .sf-arrows ul li > .sf-with-ul:focus:after, .sf-arrows ul li:hover > .sf-with-ul:after, .sf-arrows ul .sfHover > .sf-with-ul:after { border-left-color: white;/*负责二级三角箭头的颜色*/ }
补充:web前端 , HTML/CSS ,