.page {
    width: 100%;
    height: auto;
    background: #fff;

}
.nav {
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
    width: 100%;
    position: relative;
}

.drop_line {
    width: 200px;
    height: 3px;
    background: #006ACD;
}

.drop_line2 {
    width: 200px;
}

.drop_line3 {
    width: 200px; 
}

.drop_line4 {
    width: 200px;

}

.drop_line5 {
    width: 200px;
}

.drop_down {
    padding-top: 30px;
    box-sizing: border-box;
    display: none;
    position: absolute;
    top: 48px;
    top: 45px;
    left: 50%;
    transform: translateX(-50%);
    color: #000;
}
.drop_down .gmb30{
    margin-bottom: 30px;
}
.drop_down_case1 {
    width: auto; 
    margin-right: 20px;
}

.drop_down_case2 {
    width: auto;
    margin-right: 20px;

}

.drop_down_case3 {
    width: auto;
    margin-right: 20px;


}

.drop_down_case4 {
    width: auto;
    margin-right: 20px;

}

.drop_down_case5 {

}

.dark {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    height: auto;
    width: 100%;
}

.dark_back {
    height: 460px;
    background: url(../images/dark.png) no-repeat center center;
    background-size: 100% 100%;
}

.logo {
    width: 37px;
    height: 34px;
    background: url(../images/logo.png) no-repeat center center;
    background-size: 100% 100%;
}

.triangle {
    width: 8px;
    height:4px;
    background: url(../images/triangle.png) no-repeat center center;
    background-size: 100% 100%;
    margin-left: 7px;
}

.phone_back {
    width: auto;
    height: 18px; 
    padding-left: 20px;
    box-sizing: border-box;
    border-left: 1px solid #cccccc;
}

.phone {
    width: 18px;
    height: 18px;
    background: url(../images/phone.png) no-repeat center center;
    background-size: 100% 100%;
    margin-right: 10px;
}

.use_back {
    width: 89px;
    height: 30px;
    background: url(../images/use_back.png) no-repeat center center;
    background-size: 100% 100%;
}

.nav_texts:hover {
    /* color:#1492ff; */
}
.li_text:hover {
    color:#1492ff;
}