/* ＝＝＝文字コードの指定＝＝＝ */
@charset "UTF-8";

/* +++ 全体の設定 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
body {
  /* background-color: rgba(100, 148, 237, 0.02) !important; */
  background-color: #fff;
}
.header {
  background-color: cornflowerblue;
}
.header a {
  color: #fff;
}
.header_container {
  display: flex;
  align-items: end;
}

/* +++ メイン +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
main {
  position: relative;
}

/* 問題 ------------------------------------------------------ */
/* 文章 */
.question-text {
  padding: 1rem ;
  background-color: #071e3d;
  color: #fff;
}
.question-text a {
  color: #fff;
  display: inline-block;
}
/* 問題部分の画像  */
.question_imgBox {
  display: flex;
  justify-content: center;
}


/* --- 正解〇、不正解✕ --------------------------------------- */
.question-option {
  display: flex;
}
.question-options-1st,
.question-options-2nd {
  cursor: pointer;
  width: 50%;
  padding: 3rem 0rem;
  text-align: center;
  background-color: rgba(100, 148, 237, 0.35);
  border: 4px outset rgb(100, 148, 237);
}
.question-options-1st:hover,
.question-options-2nd:hover {
  border: 3px inset rgba(100, 148, 237, 0.669);
  background-color: rgba(100, 148, 237, 0.26);
}

/* --- 問題用アコーディオン部分(消去不可) --------------------- */

/* アコーディオンのコンテンツ部分 */
.accordion-content {
  display: none; /* 初期状態は非表示 */
}
/* 初期状態を表示するとき用のクラス */
/* 下記のクラスをHTMLに追加で初期表示 */
.accordion-content-active {
  display: block;
}
/* --- 問題用アコーディオン部分 -------------------------------- */
/* 答え、①.正解〇、②.不正解✕ */
.question-answer {
  color: #333;
  border-bottom: 1.5px solid #111;
  display: inline-block;
  padding: 1rem .5rem .5rem 0rem;
  margin: 0rem .5rem 1rem .5rem;
}
/* 解説 */
h4 {
  background-color: aliceblue;
  padding-left: .5rem;
}

.question-explanation-1st {
  margin: .5rem 0 1rem 1.5rem;
}
.question-explanation-1st a {
  /* color: rgb(227, 252, 255); */
  color: cornflowerblue;
}
/* 解説部分の画像 */
.Ex_imgBox {
  background-color: aliceblue;
  display: flex;
  justify-content: center;
}
/* .Ex_imgeBox img {} */


/* ***広告４******************************************************* */
.random_affiliate4th {
  padding-top: 5rem;
}


/* *************************************************************** */

/* 参考 */
.citation_reference {
  /* border-bottom: 1px solid #999; */
  margin-top: 1rem;
  margin-bottom: 2rem;
}
.citation_reference_title {
  padding-left: .5rem;
  margin-left: .5rem;
}
.citation_reference_text {
  margin-left: 1.5rem;
  font-size: .9rem;
}

/* 問題下のイメージ画像 */
.bottom-img-container {
  display: flex;
  justify-content: end;
  align-items: end;
  column-gap: 20%;
}
/* ///// 固定エリア /////////////////////////////////////////// */

.button-container {
  position: fixed;
  bottom: .5rem;
  width: 100%;
  max-width: 100%;
}
.button-img-box {
  /* background-color: #333; */
  display: flex;
  justify-content: space-between;
  padding-left: 1rem;
}
.button-box {
  width: 100%;
  height: 3rem;
  display: flex;
}
.back-button-css-1st {
  width: 15%;
  border: 1px solid steelblue ;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: cornflowerblue;
}
.next-button-css-1st {
  width: 85%;
  border: 1px solid steelblue;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgb(151, 185, 249);
}
.next-button-css-1st ,
.back-button-css-1st {
  color: aliceblue;
  /* background-color: aliceblue; */
}
.next-button-css-1st:hover ,
.back-button-css-1st:hover {
  background-color: #111;
}
.next-button-css-1st a:hover,
.back-button-css-1st a:hover {
  color: deepskyblue;
  background-color: #fff;
}

/* /////////////////////////////////////////////////////////// */

/* ふぉおてｒ */
.footer {
  margin-bottom: 5rem;
  text-align: right;
  background-color: steelblue;
}