section {
    width: 980px;
    margin: 0 auto;
}

a {
    text-decoration: none;
    color: #000;
}

h1 {
    font-size: 180%;
    color: #202321;
    font-weight: normal;
    padding: 0 0 20px 0;
    margin: 30px 0 28px;
    border-bottom: 1px solid #cccccc;
}

h2{
    margin: 30px 0 50px;
    text-align: center;
}

h3 {
    margin-bottom: 50px;
    text-align: center;
    font-size: 180%;
    font-weight: 800;
}

#wrap-index {
    margin-bottom: 80px;
    text-align: center;
}

#btn-index {
    display: flex;
    justify-content: space-around;
    column-gap: 20px;
}

.title-index {
    color: #333;
    background-color: #e3e3e3;
    padding: 5px 20px;
}

.anchor-btn {
    width: 30%;
    display: inline-block;
    flex-grow: 1;
    padding: 30px 50px;
    font-size: 120%;
    font-weight: 800;
    border: 2px solid #000;
}

.wrap-keywords {
    margin: -150px 0 100px;
    padding-top: 150px;
}

.wrap-keywords a.more-btn {
    color: #333;
    display: block;
    width: 75%;
    max-width: 735px;
    padding: 10px;
    margin: 0 auto ;
    line-height: 2;
    text-align: center;
    border: #666 1px solid;
    border-radius: 5px;
    transition: 0.5s ;
}

.wrap-keywords a:hover {
    opacity: 0.6;
    transition: 0.5s ;
}

.title-keywords {
    margin-bottom: 50px;
}

#shelmag {
    text-align: center;
}

.itemlist {
    display: flex;
    justify-content: center;
    column-gap: 150px;
    margin: 30px 0;
}

#back {
    display: flex;
    justify-content: space-around;
    column-gap: 20px;
    margin-bottom: 80px;
}

#back a {
    display: inline-block;
    flex-grow: 1;
    text-align: center;
    font-size: 110%;
    padding: 2% 10%;
    background: #efefef;
    color: #808080;
    border: #808080 1px solid;
    border-radius: 10px;
}

hr {
    margin-bottom: 50px;
}

#back-number {
    text-align: center;
    margin-bottom: 80px;
}

.back-number-img {
    display: flex;
    justify-content: space-around;
}

#bunner {
    margin-bottom: 40px;
}

.bunner_01 {
    display: inline-block;
    margin-bottom: 30px;
}


.fa-solid fa-angle-right {
    margin-left: 10px;
}