@charset "utf-8";

section {
  width: 70%;
  margin: 5rem auto;
  margin-bottom: 15rem;
}

.select_box {
  margin-bottom: 3rem;
}

.select_box select {
  font-family: Arial, "Hiragino Kaku Gothic ProN", YuGothic, "Yu Gothic", Meiryo, sans-serif;
  border-radius: 0;
  font-size: 18px;
  background: #fff;
  border: 1px solid #88a5c2;
  font: inherit;
  padding: 0.5rem 1rem;
  width: auto;
  padding-right: 3.2rem;
  background-position: right 1rem center;
  background-size: 1rem;
  background-repeat: no-repeat;
  color: #24365a;
}

h2 {
  font-size: 2em;
  color: #000;
  line-height: 1.5em;
  margin: 1.5rem 0;
  margin-bottom: 2rem;
}

h2::after {
  content: "";
  display: block;
  width: 5rem;
  height: 2px;
  background: #B4BED5;
  margin-top: 0.5rem;
}

.book_sec ul {
  display: flex;
  flex-wrap: wrap;
  margin-top: -4rem;
  list-style: none;
}

.book_sec ul li {
    font-size: 1rem;
    margin-top: 4rem;
    width: 14%;
    margin-right: 2%;
}

.book_sec ul li .title {
  text-align: center;
    color: #17458f;
    font-weight: bold;
    margin-bottom: 0.4rem;
    line-height: 1.4;
}

.book_sec ul li .pdf_btn {
  /* border: solid 2px #00a2e0; */
    display: block;
    position: relative;
    margin-bottom: 0.8rem;
}

.book_sec ul li .image {
  display: block;
  width: 100%;
}

.book_sec ul li .pdf_btn img {
  width: 100%;
}

.book_sec ul li .pdf_btn .btn {
  position: absolute;
  bottom: 0;
  left: 0;
  background: #00a2e0;
  color: #fff;
  width: 100%;
  height: 2.5rem ;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* 会報iframe-tabbutton */
.book_menu {
  padding-top: 0;
  /* padding-bottom: 5rem; */
  display: flex;
  /* justify-content: center; */
}

.book_menu ul {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.book_menu ul li {
  width: 300px;
  list-style: none;
  margin: 0 5px;
}

.book_button {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 5rem;
  background: #dcf2fa;
  color: #00a2e0;
  font-weight: bold;
  transition: 0.3s;
}

.book_button:hover {
  background-color: #17458f;
  color: #fff;
}


.now_tab {
  background-color: #17458f;
  color: #fff;
  pointer-events: none;
}




iframe#parentframe { 
  width: 100%;
}

@media screen and (max-width:767px){
  section {
    width: 90%;
  }

  .book_sec ul li {
    width: 30%;
    font-size: 1.2rem;
  }
}