@charset "utf-8";

.subjectBoard_img img {
    height: 120px;
    width: auto;
}

.mail_card_flow ul {
    display: flex;
    justify-content: space-between;
}

.mail_card_flow ul li {
    border: 1px solid #ddd;
    box-sizing: border-box;
    width: 22.5%;
    text-align: center;
    padding: 20px 0;
    font-weight: bold;
    font-size: 16px;
    line-height: 1.6;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}

.mail_card_flow ul li::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    border-top: 40px solid #0075c2;
    border-right: 40px solid transparent;
}

.mail_card_flow ul li span {
    position: absolute;
    top: 4px;
    left: 7px;
    z-index: 1;
    color: #fff;
    font-size: 15px;
    font-weight: bold;
    line-height: 1;
}
@media only screen and (max-width: 750px) {
    .subjectBoard {
        padding: 9.2307692308vw 7vw;
    }
    .mail_card_flow ul {
        flex-wrap: wrap;
        gap: 3.467vw 0;
    }
    .mail_card_flow ul li {
        width: 48%;
        padding: 5.333vw 0;
        font-size: 4.267vw;
        border-radius: 2.667vw;
    }
    
    .mail_card_flow ul li::after {
        border-top: 10.667vw solid #0075c2;
        border-right: 10.667vw solid transparent;
    }
    
    .mail_card_flow ul li span {
        top: 1.067vw;
        left: 1.867vw;
        font-size: 4vw;
    }
}

.mail_card_img {
    margin: 30px 0;
}
.mail_card_img p {
    margin: 0 0 5px;
}

.mail_card_img img {
    display: block;
    width: 100%;
    height: auto;
}

@media only screen and (max-width: 750px) {
    .mail_card_img {
        margin: 20px 0;
    }
}