.keynote {
    font-size: 80px;
    margin-bottom: 40px;
}

.block4 {
    display: inline-block;
    width: 24%;
    box-sizing: border-box;
    vertical-align: top;
    margin: 0;
    margin-top: 20px;
    padding:1em;text-align:left;
}

#block4-20 {
    width: 19%;
}

#block4-30 {
    width: 30%;
}


.arrow2 {
    width: 0;
    height: 0;
    border-right: 5px solid transparent;
    border-left: 5px solid transparent;
    border-bottom: 9px solid #fff;
    margin: 0 auto;
}

.table3 {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: stretch;
    width: 100%;
    position: relative;
}

.cell3 {
    width: 50%;
    width: calc(100% / 2);
    border: solid 1px #ddd;
    border-top: 0;
    box-sizing: border-box;
    padding: 1em 3em;
}
    .cell3:nth-of-type(3n) {
        border-right: 0;
        border-left: 0;
    }

.table-border-top, .table-border-left, .table-border-right, .table-border-bottom {
    position: absolute;
}

.table-border-top {
    width: 100%;
    height: 1px;
    top: 0;
    background: #fff;
}

.table-border-bottom {
    width: 100%;
    height: 1px;
    bottom: 0;
    background: #fff;
}

.table-border-left {
    width: 1px;
    height: 100%;
    left: 0;
    background: #fff;
}

.table-border-right {
    width: 1px;
    height: 100%;
    right: 0;
    background: #fff;
}

.block-round {
    margin: -15px;
}

.round {
    border-radius: 50%;
    border: 16px solid #f3f7fa;
    width: 330px;
    height: 330px;
    margin: -15px auto;
    text-align: center;
}

.round-content {
    color: #fff;
    text-align: center;
    display: inline-block;
    margin-top: 25px;
}

.round-head {
    padding: 10px 0;
    margin: 10px 0;
    border-bottom: 1px solid #fff;
    width: 230px;
    font-size: 18px;
    font-weight: bold;
}

.round-body {
    height: 200px;
}

#im99_pc {
    margin: 0 auto;
    display: block;
}

#im99_mobile {
    margin: 0 auto;
    display: none;
}

#IProductBannerText1 {
    font-size: 40px;
    font-weight: bolder;
    padding-bottom: 25px;
    line-height: 50px;
}

#IProductBannerText2 {
    font-size: 22px;
    border-top: 1px solid #fff;
    border-bottom: 1px solid #fff;
    padding-top: 10px;
    padding-bottom: 10px;
    width: 15em;
    font-weight: normal;
}

#IProductBannerText3 {
    padding-top: 15px;
    line-height: 18px;
}


@media(max-width:1300px) {
    .block4.block-round {
        /*width: 49%;*/
    }
}

@media(max-width:900px) {
    .WarpBox.WarpBox2 {
        margin: 0 100px;
    }

    .block4 {
        width: 49%;
    }

    #block4-20 {
        width: 39%;
    }

    #block4-30 {
        width: 59%;
    }


    .cell3 {
        width: 50%;
    }

    #im99_pc {
        display: none;
    }

    #im99_mobile {
        display: block;
    }

    #IProductBannerText1 {
        font-size: 30px;
        line-height: 30px;
        font-weight: bold;
        padding-bottom: 16px;
    }

    #IProductBannerText2 {
        font-size: 18px;
    }

    #IProductBannerText3 {
        display: none;
    }
}

@media(max-width:700px) {
    .block4, #block4-20, #block4-30, .block4.block-round {
        width: 100%;
        margin-top: 20px;
    }

    .part > header {
        font-size: 26px;
    }

    .keynote {
          font-size: 50px;
        float: left;
        margin-right: 20px;
        width: 40%;
        padding-top: 30px;
    }

    .cell3 {
        width: 100%;
    }

    #IProductBannerText2 {
        display: none;
    }
}

@media(max-width:600px) {
    .WarpBox.WarpBox2 {
        margin: 0 30px;
    }
    .block4 {

    padding:1em;text-align:center;
}
    #block4-30 {
         margin-top: -10px;
           }
    
}


@media(max-width:450px) {
    .part > header {
        font-size: 24px;
        padding-left: 10px;
        padding-right: 10px;
    }
}