.flexbox {
    display: flex;
    display:-webkit-flex;
    display:-ms-flexbox;
    -ms-flex-pack:justify;
    -webkit-justify-content:space-between;
    justify-content:space-between;
    
    flex-wrap: wrap;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
}
.flexbox.vtop {
    -webkit-align-items: flex-start;
    -ms-align-items    : flex-start;
    align-items        : flex-start;
}
section.newsletter-archive {
    box-sizing: border-box;
    width: 880px;
    margin: 80px auto 70px;
}
.newsletter-archive h4 {
    text-align: center;
    display: block;
    font-size: 18px;
    border-bottom: 1px solid #000;
    padding-bottom: 30px;
    font-weight: bold;
}
.newsletter-archive .contents {
    margin-top: 35px;
}
.newsletter-archive .contents .lead {
    margin-bottom: 20px;
}
.newsletter-archive .contents li {
    box-sizing: border-box;
    margin-bottom: 35px;
    -moz-box-shadow: 0 0 4px 1px #dfdfdf;
    -webkit-box-shadow: 0 0 4px 1px #dfdfdf;
    box-shadow: 0 0 4px 1px #dfdfdf;

}
.newsletter-archive .contents li h5 {
    background: #f4f4f4;
    color: #3a3a3a;
    padding: 30px 55px;
    font-size: 20px;
}
.newsletter-archive .contents li .body {
    box-sizing: border-box;
    padding: 40px 55px;
    font-size: 14px;
}
.newsletter-archive .contents li .body img {
    width: 300px;
}
.newsletter-archive .contents li .body .desc {
    width: 440px;
    line-height: 1.4;
}
.newsletter-archive .contents li .body .archivelink {
    margin-top: 1.5em;
    display: block;
    color: #3a3a3a;
    text-decoration: none;
}
.newsletter-archive .contents li .body .archivelink .ul {
    text-decoration: underline;
}

@media screen and (max-width: 767px) {

section.newsletter-archive {
    box-sizing: border-box;
    width: 86%;
    margin: 12.5vw auto 70px;
}
.newsletter-archive h4 {
    font-size: 4.6875vw;
    border-bottom: 1px solid #000;
    padding-bottom: 4.6787vw;
}
.newsletter-archive .contents {
    margin-top: 7.03125vw;
}
.newsletter-archive .contents .lead {
    margin-bottom: 4vw;
}
.newsletter-archive .contents li {
    box-sizing: border-box;
    margin-bottom: 35px;
}
.newsletter-archive .contents li h5 {
    padding: 5.46875vw 4.6875vw;
    font-size: 4.0625vw;
}
.newsletter-archive .contents li .body {
    box-sizing: border-box;
    padding: 4.6875vw 5%;
    font-size: 3.125vw;
}
.newsletter-archive .contents li .body img {
    width: 100%;
}
.newsletter-archive .contents li .body .desc {
    margin-top: 1em;
    width: 100%; 
}
.newsletter-archive .contents li .body .archivelink {
    margin-top: 1.5em;
    display: block;
    color: #3a3a3a;
    text-decoration: none;
}
.newsletter-archive .contents li .body .archivelink .ul {
    text-decoration: underline;
}

}