#sub_container .contents {
    width: 1440px;
    margin: 0 auto;
}


.main_list td a {
    display: block;
    padding: 20px 0;
    transition: 0.2s;
    max-width: 95%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.main_list td img {
    display: inline-block;
    padding: 20px 0 20px 2px;
}

.certification tr>th {
    border: 0;
}

.certification tr>th:nth-child(1) {
    width: 10%;
}

/* .certification tr>th:nth-child(2) {
    width: 90%;
} */

.certification tr>th:nth-child(3) {
    display: none;
}

.certification tr>th:nth-child(4) {
    display: none;
}


.main_list tr>td:nth-child(1) {
    width: 10%;
}

/* .main_list tr>td:nth-child(2) {
    width: 90%;
} */

.main_list tr>td:nth-child(3) {
    display: none;
}

.main_list tr>td:nth-child(4) {
    display: none;
}

.qna_title {
    text-align: left;
    padding-top: 20px;
    font-size: 1.8rem;
    font-weight: 400;
}

.qna_text {
    width: 100%;
    font-size: 1.1rem;
    color: #3a3a3a;
    line-height: 1.4rem;
    min-height: 350px;
}

form[name="signform"]>a{
    display: block;
    float: left;
    height: 40px;
    line-height: 40px;
    width: 150px;
    text-align: center;
    background: #434343;
    color: #ffffff;
    font-weight: 500;
    font-size: 16px;
    border-radius: 5px;
 }


 .board_search{
    margin-left: 0;
    float: right;
 }




@media screen and (max-width: 1280px) {
    #sub_container .contents {
        width: 100%;
        margin: 0 auto;
        box-sizing: border-box;
    }
}

@media screen and (max-width: 1100px){
    #sub_container .contents {
        padding: 0 10px;
    }
}

@media screen and (max-width:800px) {

    #sub_container .contents{
        padding: 0;
        width: 97% !important;
        margin: 0 auto;
    }

    .board_search {
        text-align: center;
    }

    .certification {
        display: none;
    }


    .main_list tr td {
/*         display: block;
        float: left; */
        box-sizing: border-box;
        padding-right: 20px;
        padding-left: 5px;
    }

    .main_list tr>td:nth-child(2) {
        height: 30px;
        max-width: 100px;
    }

/*     table table table tr>td:nth-child(2) a {
        width: 100%;
    } */

}