.banner{
    height: 60px;
}
.b_text {
    line-height: 60px;
    font-weight: 700;
}
.secondary_logo2 {
    height: 60px;
    float: left;
}

.channel_contact {
    height: 220px;
}
.channel_main_items ul {
    height: 320px;
}
.channel_main_items .second_item {
    background-color: #efefef;
    height: 390px;
}
@media only screen and (min-width: 1920px){
    .channel_contact .contact_left {
        margin-top: 16px;
    }
}
@media only screen and (max-width: 1360px){
    .channel_main_items ul {
        height: 350px;
    }
}
@media only screen and (max-width: 1014px) and (min-width: 800px){
    .channel_main_items ul {
        height: 430px;
    }
    .channel_main_items .second_item {
        height: 430px;
    }
}
.b_text {
    line-height: 60px;
}
.secondary_logo2 {
    height: 60px;
    float: left;
}

.tips_div li {
    width: 100%;
}

/*what we offer*/
.oem2_l {
    width: 45%;
    float: left;
    margin-right: 5%;
}