html,
body {
    font-size: 10px;
}

body {
    font-family: "M PLUS Rounded 1c", serif;
    font-style: normal;
    font-weight: 400;
}

.wrapper {
    box-shadow: 0 0 10px 0 rgba(0, 0, 0, .5);
    margin: 0 auto;
    max-width: 1920px;
    min-width: 1280px;
    width: 100%;
}

figure,
ol,
p,
section,
ul {
    margin: 0;
    padding: 0;
}

.mv-ctr {
    margin-bottom: 8rem;
}

.mv {
    overflow-x: hidden;
}

.mv-img {
    left: 50%;
    position: relative;
    transform: translateX(-50%);
    width: 1920px;
}

.bg-ctr.bg-stripe {
    background-image: repeating-linear-gradient(90deg, #f8f5d5, #f8f5d5 5px, #ffffff 5px, #ffffff 10px);
    padding: 1px 0;
}

.main-ctr {
    background-color: #fff;
    border-radius: 2.5rem;
    font-family: "Noto Sans JP", serif;
    margin: 3.5rem auto;
    max-width: 1500px;
    min-width: 1216px;
    padding: 3.5rem 0;
    width: 95%;
}

.section-ctr.post-ctr {
    margin-bottom: 8rem;
}

.section-ttl {
    background-color: #fff8cc;
    color: #009380;
    font-size: 4.5rem;
    letter-spacing: -.05em;
    margin: 8rem auto 7rem;
    padding: 3rem 0;
    text-align: center;
}

.section-ttl-txt {
    position: relative;
}

.section-ttl-txt::before,
.section-ttl-txt::after {
    content: "";
    display: block;
    left: 0;
    position: absolute;
    top: 0;
}

.post-ctr .section-ttl-txt::before {
    background: url(../img/img_post-a_pc.png) no-repeat 0 0 / contain;
    height: 158px;
    transform: translate(-38%, -87%);
    width: 505px;
}

.post-ctr .section-ttl-txt::after {
    background: url(../img/img_post-b_pc.png) no-repeat 0 0 / contain;
    height: 205px;
    transform: translate(-203%, -41%);
    width: 172px;
}

.section-txt {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 0 auto;
    width: 1000px;
}

.post-list {
    align-items: flex-end;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 1rem auto 3rem;
    width: 1200px;
}

.post-item {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    margin: 0 auto;
    min-height: 405px;
    width: 50%;
}

.post-item:nth-child(-n+3) {
    width: 33%;
  }

.post-item-ttl {
    font-size: 1.8rem;
    font-weight: 700;
    margin: .5rem 0 1rem;
    text-align: center;
}

.post-item iframe {
    margin: 0 auto;
}

.post-txt {
    font-weight: 1.8rem;
    font-weight: 700;
    text-align: center;
}