header {
    height: 5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: sticky;
    top: 0;
    padding: 0 1.5rem;
    z-index: 7777;
    background: #fff;
}
header h1 {
    width: 15rem;
}
header h1 a {
    width: 100%;
}
header h1 a img {
    width: 100%;
}
header #backBtn {
    width: 2rem;
    position: absolute;
    left: 1.5rem;
}
header #backBtn img {
    width: 100%;
}

.bannerImg {
    width: 100%;
    padding: 1.5rem 0;
}
.bannerImg a {
    width: 100%;
}
.bannerImg a img {
    width: 100%;
}

main {
    padding: 2rem 0 8rem;
}
main section {
    text-align: center;
}
main .s1 {
    padding-bottom: 4rem;
}
main .s2 {
    padding: 4rem 0;
}
main section h2 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 3rem;
}
main section h2 span {
    font-size: 2.4rem;
    font-weight: 900;
    color: #016fb9;
}
main .s1 .menu {
    display: flex;
    gap: 1.5rem;
    padding: 0 1.5rem;
}
main .s1 .menu a {
    width: calc(100% / 3);
    padding: 2rem 0;
    border-radius: 1rem;
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.6rem;
    font-weight: 800;
    background: #f2f2f2;
}
main .s1 .menu a img {
    height: 4rem;
}
main .s2 {
    border-top: 1px solid #f2f2f2;
}
main .s2 .menu {
    display: flex;
    flex-flow: column nowrap;
    gap: 2rem;
    padding: 0 1.5rem;
}
main .s2 .menu a {
    width: 100%;
    font-size: 1.6rem;
    font-weight: 600;
    color: #fff;
    background: #016fb9;
    border-radius: 1rem;
    padding: 3rem;
    background-image: url(../img/arrow-1.png);
    background-size: 3rem;
    background-repeat: no-repeat;
    background-position: right 3rem center;
    text-align: left;
}
main .s2 .menu a span {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
}
main > h2 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 2rem;
    padding: 0 1.5rem;
}
main > h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #016fb9;
    margin-bottom: 1rem;
    padding: 0 1.5rem;
}
main > pre {
    font-size: 1.4rem;
    line-height: 1.4;
    color: #636363;
    margin-bottom: 4rem;
    padding: 0 1.5rem;
}
main > pre b {
    font-size: 1.4rem;
    font-weight: 600;
    color: #016fb9;
    line-height: 1.4;
}
main > pre em {
    font-size: 1.4rem;
    font-weight: 600;
    line-height: 1.4;
}
main > a {
    width: calc(100% - 3rem);
    margin: 0 1.5rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: #fff;
    background: #016fb9;
    border-radius: 1rem;
    padding: 3rem;
    background-image: url(../img/arrow-1.png);
    background-size: 3rem;
    background-repeat: no-repeat;
    background-position: right 3rem center;
    text-align: left;
    display: block;
    margin-bottom: 4rem;
}
main > a span {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
}