*{
    font-family: 'Noto Sans JP';
}

body{
    width: 1160px;
    background-color: #fdfeff;
    background-image: url(/cms/img/common/trial_pop_bg.jpg), url(/cms/img/common/palette_bg_middle_right.png), url(/cms/img/common/palette_bg_middle_left.png), linear-gradient(to bottom, #fdfeff, #ffffff);
    background-position: center top, right bottom, left bottom;
    background-repeat: repeat-x, no-repeat, no-repeat;
    background-size: contain, auto, auto;
    margin: auto;
}

#viewerOuter{
    margin: 60px auto 0;
}

#viewerTitleWrapper{
    width: 100%;
    max-width: 1290px;
    margin: 0 auto 45px;
    text-align: center;
}

#viewerTitle{
    font-weight: normal;
    position: relative;
}

#viewerTitleLogo{
    width: 120px;
    display: block;
    margin: 0 auto 10px;
    position: relative;
}

#viewerTitleCaption{
    color: #333;
    font-size: 14px;
    letter-spacing: 1px;
    margin: 0;
}

#viewerContentsWrapper{
    display: flex;
    margin: 0 auto;
    padding: 20px;
}

#mailTitleListOuter{
    width: 392px;
    margin-right: 40px;
    padding: 0;
}

#mailTitleListHeader{
    font-size: 16px;
    font-weight: normal;
    margin: 0 0 5px;
}

#mailTitleListHeaderCount{
    font-size: 15px;
    margin-left: 10px;
}

#mailTitleListWrapper{
    background-color: #fff;
    box-shadow: 2px 2px 5px 2px rgba(0, 0, 0, .1);
    box-sizing: border-box;
    list-style: none;
}

#mailTitleOuter{
    padding: 20px;
    margin: 0;
}

.mailTitle{
    border-bottom: 1px solid #e7e7e7;
    cursor: pointer;
    font-size: 13px;
    list-style: none;
    overflow-wrap: break-word;
    padding: 15px;
    word-break: keep-all;
    white-space: normal;
}

.mailTitle:last-of-type{
    border-bottom: none;
}

.mailTitle.current{
    background-color: #fc0;
    color: #333;
    cursor: default;
    list-style: none;
    margin: 0;
}

.mailTitleList{
    color: #007bff;
}

.mailTitle.current .mailTitleList{
    color: #333;
    font-weight: 600;
}

#mailContentsPreviewOuter{
    width: calc( 100% - 432px );
    min-width: 480px;
    max-width: 850px;
}

#mailContentsPreview{
    width: 100%;
    background-color: #fff;
    box-shadow: 2px 2px 5px 2px rgba(0, 0, 0, .1);
    margin-top: 30px;
}

#mailContentsPreviewBody{
    width: 90%;
    background-color: #fff;
    box-sizing: border-box;
    color: #333;
    font-size: 16px;
    margin: 0 auto;
    overflow-x: hidden;
    padding: 10px 10px 45px;
    text-align: center;
}

#mailContentsPreviewBody{
    font-size: 24px;
}

#mailContentsPreviewTitle{
    border-bottom: 1px solid #e1e1e1;
    font-weight: bold;
    padding: 40px 0;
}

#mailContentsPreviewBody .mailContentsPreviewBodyInner *{
    width: 100%;
}

#mailContentsPreviewBody .mailContentsPreviewBodyInner span{
    width: 100%;
    font-size: 26px;
}

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

    body{
        width: 100%;
    }

    #viewerContentsWrapper{
        flex-direction: column;
        padding: 0;
    }

    #mailTitleListOuter,
    #mailContentsPreviewOuter{
        width: 100%;
        box-sizing: border-box;
        float: none;
    }

    #mailContentsPreviewOuter{
        min-width: auto;
    }

    #mailTitleListOuter{
        padding: 0;
        margin: 0;
    }

    #mailTitleListWrapper{
        height: 50vh;
        margin: 0 auto 45px;
        overflow-y: scroll;
    }

    #mailTitleOuter{
        padding: 20px 10px;
    }

    .mailContentsPreviewBodyInner * {
        width: 100%;
    }

}