C3製作導航欄分割線及立體風格

//首先寫一個導航欄樣式

.nav{
    width:560px;
    height: 50px;
    font:bold 0/50px Arial;
    text-align:center;
    margin:40px auto 0;
       background: #f65f57;
       border-radius:10px;/*製作圓*/
       color:#F16153;
       box-shadow:0px 5px 0px #B64B41;
     

  }
 //導航欄轉動樣式
  .nav a{
    display: inline-block;
    -webkit-transition: all 0.2s ease-in;
    -moz-transition: all 0.2s ease-in;
    -o-transition: all 0.2s ease-in;
    -ms-transition: all 0.2s ease-in;
    transition: all 0.2s ease-in;//轉動速度
  }
  .nav a:hover{
    -webkit-transform:rotate(20deg);
    -moz-transform:rotate(20deg);
    -o-transform:rotate(20deg);
    -ms-transform:rotate(20deg);
    transform:rotate(20deg);//轉動角度
  }

  .nav li{
    position:relative;
    display:inline-block;
    padding:0 16px;
    font-size: 13px;
    text-shadow:1px 2px 4px rgba(0,0,0,.5);//文字陰影
    list-style: none outside none;
  }

  /*使用偽元素製作導航列表項分隔線*/
  .nav li::before,.nav li::after{
     content:"";
     position:absolute;
     top:14px;
     height: 25px;
     width: 1px;
   }
   .nav li::after{
     right: 0;
     background: -moz-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba(255,255,255,0));
     background: -webkit-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba(255,255,255,0));
     background: -o-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba(255,255,255,0));
     background: -ms-linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba(255,255,255,0));
     background: linear-gradient(top, rgba(255,255,255,0), rgba(255,255,255,.2) 50%, rgba(255,255,255,0));
   }
   .nav li::before{
     left: 0;
     background: -moz-linear-gradient(top, #ff625a, #9e3e3a 50%, #ff625a);
     background: -webkit-linear-gradient(top, #ff625a, #9e3e3a 50%, #ff625a);
     background: -o-linear-gradient(top, #ff625a, #9e3e3a 50%, #ff625a);
     background: -ms-linear-gradient(top, #ff625a, #9e3e3a 50%, #ff625a);
     background: linear-gradient(top, #ff625a, #9e3e3a 50%, #ff625a);
   }
        /*刪除第一項和最後一項導航分隔線*/
  .nav li:last-child:after{
         width:0px;
            height:0px;
  }
  .nav a,
  .nav a:hover{
    color:#fff;
    text-decoration: none;
  }