#main {
    width: 100%;
    max-width: 980px;
    margin: 80px auto 0;
    padding: 0 20px 30px;
    box-sizing: border-box;
}

@media screen and (max-width: 500px) {
    .cpn_detail_block .aftersales_form {
        font-size: 1.6rem;
        margin-left: 0;
        margin-bottom: 52px;
    }
    .list_no_newline li {
        display: block;
        margin-bottom: 20px;
        margin-left: 0;
        width: 48%;
        font-size: 1.6rem;
        padding-left: 0;
    }

    .list_no_newline{
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .list_no_newline a {
       padding: 15px 0;
        box-sizing: border-box;
    }

    .in_contents {
        margin-left: 0;
    }
    .list_no_newline li:after {
        margin: 0;
    }
}