.menu {
    margin: 10px auto;
    height: 50px;
    width:320px;

}
.menu  span {
    display: block;
    float: left;
    margin-left: 20px;
    border-radius: 5px;
    background-color: #DADADA;
    color: white;
    height: 40px;
    line-height: 40px;
    width: 180px;
    text-align: center;
    cursor: pointer;
    margin-top: 10px;


}
.menu span:hover {
    background-color: #4ACBD1;
}
.choose {
   background-color: #4ACBD1!important; 
}.product_panel {
    width: auto;
    height:200px;
  
    margin-left: 20px;
    margin-right: 10px;
    margin-top: 100px;
    cursor: pointer;
}

    .product_panel img {
        width: 100%;
        height: 100%;
    }

    .product_panel p {
        font-size: 13px;
        text-align: center;
    }

.detail {
    min-height: 300px;
    border-top: 2px solid #F9F9F9;
    height: auto;
    padding-top: 20px;
}

.p_img {
    float: left;
    width: auto;

    min-height: 350px;
    height: auto;
}

.p_detail {
    float: left;
    width: auto;

    height: auto;
    margin-top: 50px;
    margin-left: 50px;
}
.p_img-img {
    width: 100%;
    height: 100%;
}
.td_title {
    background-color: #F9F9F9;
}
#tb_product {
    border-collapse: collapse;
    border: 1px solid #E5E5E5;
    width: 450px;
    height: 350px;
}
#tb_product td {
        border-collapse: collapse;
    border: 1px solid #E5E5E5;
    padding-left: 15px;
    height: 70px;
}
.description {
    height: 140px;
}


.detail_img {
    width: 80%;
    height:80%;
    margin: 20px auto 20px auto!important;
   
}
.detail_d {
 
    width: auto;
    height: auto;
    margin-top: 50px;
    
   
}
.detail_d table {

    width: 90%;
}