.frame_main{
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    /*  border: 1px solid black;*/
    position: relative;
}
/* logo */
.logo_main{
    height: 90px;
    padding: 10px 0;
}
.logo{
    float: left;
    width: 270px;
    text-align: center;
}
.logo img{
    width: 270px;
    height: 70px;
    cursor: pointer;
}
.slogan{
    float: left;
    width: 500px;
    margin-left: 12px;
    font-weight: 500;
    line-height: 70px;
    text-align: center;
    font-size: 22px;
}
.slogan img{
    width: 100%;
    max-height: 70px;
}
.search{
    width: 230px;
    height: 100%;
    padding-right: 20px;
    float: right;
}
.search_bg{
    width: 100%;
    height: 40px;
    margin-top: 15px;
    background: url("../images/search_bg.png");
    background-size: 100% 100%;
}
.search_bg input{
    float: left;
    width: 165px;
    padding-left: 5px;
    margin: 4px 0 0 10px;
    line-height: 28px;
    outline: none;
    border: 1px solid #ffffff;
}
.search_bg img{
    float: left;
    width: 25px;
    margin: 8px 0 0 0;
    padding: 1px;
    cursor: pointer;
}
.tel_phone{
    float: right;
}
.phone_img{
    float: left;
    padding-right: 10px;
    width: 30px;
    height: 100%;
    line-height: 60px;
}
.phone_txt{
    float: left;
    width: 120px;
    padding: 12px 0 0 10px;
}
.phone_txt p{
    margin: 0;
    line-height: 20px;
}

/* 导航 */
.nav_main{
    height: 45px;
    background-color: #112D5C;
}
.nav_content{
    height: 45px;
    line-height: 45px;
}
.nav_content ul{
    list-style-type: none;
    margin: 0;
    padding: 0;
}
.nav_content li{
    float: left;
    line-height: 45px;
    padding: 0 30px;
    border-left: 1px dashed rgba(204, 204, 204, 0.33);
    position: relative;
}
.nav_content li:last-child{
    border-right: 1px dashed rgba(204, 204, 204, 0.33);
}
.nav_content li:hover{
    background-color: #0b1d3b;
}
.nav_content li:hover .nav_hide{display: block;}
.nav_content li a{
    color: #ffffff;
}
.nav_hide{
    position: absolute;
    top: 45px;
    left: 0;
    z-index: 20;
    width: 100%;
    min-height: 120px;
    background-color: #112D5C;
    padding: 0 0 12px 0;
    display: none;
}
.nav_hide li{
    float: left;
    width: 100%;
    line-height: 20px;
    text-align: center;
    border: 0;
    padding: 5px 5px;
}
.nav_hide li:hover{
    background-color: #0b1d3b;
}
.nav_hide a{
    font-size: 14px;

}