@media only screen and (max-width: 480px) {

    .img_banner {
        background-image: url('../images/banner_contact2b_mobile.jpg');
        background-position: 27% center;
        background-position: center 3em;


    }

    .sum_main_content {
        background-size: 100% auto;
        background-repeat: no-repeat;
        background-position: center top;
        overflow: hidden;

    }

    .section_1_contact {
        width: 100%;
        min-height: auto;
        background-size: 244% 121%;
        background-repeat: no-repeat;
        /* background-position: 23% 0%; */
        /* margin: 7% 0 0 0; */
        padding: 3rem 0;
    }

    .address {
        /* padding-top: 68.25%; */
        margin: 1rem 0 0 8%;
    }

    .vietnam_address {
        /* margin-top: 13%; */
        /* margin-bottom: 22%; */
    }

    .section_1_contact h3 {
        font-size: 200%;
        width: 80%;
        text-align: left;
        text-align-last: left;
        left: 0;
        top: 4%;
    }


    .address h5 {
        font-size: 145%;
        width: 50%;
        text-align: left;
        /* left: 5%; */
        top: 43%;
    }





    .section_1_contact .detail {
        /* padding-top: 34%; */
        /* left: -20%; */
        /* margin-top: 10%; */
        max-width: 100%;
    }

    .section_1_contact .d-location {
        padding-left: 1rem;
    }

    .detail div>img {
        width: 6%;
        left: 26.3%;
    }

    .section_1_contact .singapore_address {
        margin-top: 0;
    }

    .section_1_contact .vietnam_address .d-location {
        padding-bottom: 0;
    }


    .detail_address img {}

    .detail_email p {
        top: 41%;
    }

    .detail_email img {
        top: 41%;
    }

    .detail_phone img {
        top: 65%;
    }

    .detail div>p {
        width: 70%;
        font-size: 110%;
        left: 36%;

    }

    .item_input .d-label {
        justify-content: flex-start;
    }

    .section_1_contact .d-inner {
        padding-left: 0;
    }

    .section_2_contact {
        width: 100%;
        min-height: auto;
        padding-top: 0;
        background-color: #efefef;
        display: block;
        position: relative;
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
    }

    .section_2_contact p:first-child {
        width: 100%;
        font-size: 177%;
        text-align: left;
        left: 3%;
        position: relative;
        margin-top: 0;
    }

    .section_1_contact .detail>div>img {
        width: 1.2rem;
        max-width: 1.2rem;
        height: 1rem;
        transform: translateY(-.15em);
    }

    .subtitle_section_2 {
        width: 80%;
        font-size: 116%;
        top: 18%;
        left: 3%;
        font-weight: 600;
        position: relative;
        display: block;
        margin-top: 1em;
        margin-bottom: 1em
    }

    .section_2_contact .info_input {
        width: 77%;
        margin-left: 11%;
        float: left;
        position: relative;
        margin-bottom: 0;
        padding-bottom: 3rem;

    }

    .item_input {
        width: 100%;
        margin: 0 auto;
        left: auto;
        flex-direction: column;
    }

    .info_input .item_input>span {
        display: none;
    }

    .info_input .error-box {
        display: block !important;
    }

    .info_input .error-box {
        font-size: 90%;
        margin-left: 0;
        margin-top: 2px;
        line-height: 0em;
        margin-bottom: 1em;
        float: left;
    }

    #item_message span {
        /* display: none; */
    }

    #item_message .d-label {
        margin-bottom: 2.5%;
    }

    #item_message .error-box {
        margin-top: 0.8em;
        margin-bottom: 0;
    }

    .info_input .d-input {
        flex-direction: column;
    }

    .item_input .d-label {
        width: 100%;
    }

    .info_input input[type=text] {
        width: 100%;
        padding: 4% 0 3.5% 5%;
        margin: 2.5% 0;
        border: none;
        font-size: 110%;
        color: #000;
        text-transform: uppercase;
    }

    .info_input select {
        width: 100%;
        margin: 2.5% 0;
    }

    #item_message textarea {
        width: 100%;
        margin-left: -4.5%;
        position: relative;
        left: 4.4%;
        border: none;
        text-transform: uppercase;
        font-size: 100%;
        line-height: 1.2;
        padding: 4% 0 12% 5%;
    }

    .button-submit {
        margin: 0;
        font-size: 130%;
        position: absolute;
        float: left;
        bottom: 0;
        /* right: 25%; */
        padding: .35rem 12.2%;
        left: 12%;
        right: 12%;

    }

    .sum_main_content {
        position: relative;
        padding: 0;
    }

    .fixed-footer {
        position: relative;
    }

    .sum_main_content {
        flex-direction: column;
    }

    input::placeholder,
    textarea::placeholder {
        color: #ccc;
    }
}