ul, li {
    list-style-type: none;
    list-style: none;
}

#tab{
    width: 100%;
    margin:5px auto;
}



    #tab-header ul li:first-child{  
        float: left;  
        width: 498px;  
        height: 80px;  
        line-height: 80px;   
        text-align:center;
        font-size: 40px;
        background: white;
        border-radius: 16px 0px 0 16px;
        border: 1px solid gray;
    }  

        #tab-header ul li:last-child{  
        float: left;  
        width: 498px;  
        height: 80px;  
        line-height: 80px;   
        text-align:center;
        font-size: 40px;
        background: white;
        border-radius: 0px 16px 16px 0px;
        border: 1px solid gray;
    }  

    #tab-header ul li:first-child.selected{  
        border-radius: 16px 0px 0 16px;
        font-weight: bolder;  
        border-bottom: 0;  
        padding: 0;  
        color: white;  
            background-image: linear-gradient(to right, #3bdbb6, #89d3bb, #7aedd2, #5de7c7, #88ebdd, #9dddce, #43c3b1);
        border: 1px solid gray;
      
    } 


        #tab-header ul li:last-child.selected{  
        border-radius: 0px 16px 16px 0px;
        font-weight: bolder;  
        border-bottom: 0;  
        padding: 0;  
        color: white;  
           background-image: linear-gradient(to right, #3bdbb6, #89d3bb, #7aedd2, #5de7c7, #88ebdd, #9dddce, #43c3b1);
        border: 1px solid gray;
      
    }  
      

    
      
    /*主要内容*/  
    #tab-content .dom{  
        display: none;  
    }