@charset "utf-8";
@import url('https://fonts.googleapis.com/css?family=Lato');

body{
    font-family: -apple-system, blinkMacSystemFont, /* Macの欧文はSan Francisco (OS X 10.11以降) */
               'Helvetica Neue',            /* Macの欧文 (OS X 10.10以前) */
               'Segoe UI',                  /* Windowsの欧文 */
               'Hiragino Kaku Gothic ProN', /* Macのヒラギノ */
               Meiryo,                      /* Windowsのメイリオ */
               sans-serif;
  overflow-x: hidden;
  position: relative;
  margin: 0;
}
html{
  overflow-x: hidden; 
}
img{
  max-width: 100%;
  height: auto;
  flex-shrink: 0;
}
*, ::after, ::before {
    box-sizing: border-box;
}
.container {
  width: 100%;
  padding-right: 0;
  padding-left: 0;
  margin-right: auto;
  margin-left: auto;
  /*height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;*/
}
.learning_mainimg{
/*  margin-top:-10px;*/
max-height: 100%;
}
.movie-wrap {
  position: relative;
}
.movie-wrap video {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  -webkit-transform: translateX(-50%);
  width: 85%;
}
/* ヘッダーのボタンエリア */
.header_wrap{
    display:flex;
}
/* コンテンツ一覧へ戻るボタン */
.button_back_ichiran{
    margin: 16px auto 0 13px;
}
#btn-back {
    padding: 4px 10px 3px 10px;
    font-size: 12px;
    line-height:13px;
    font-weight: bold;
    background-color: #97a6c1;
/*    border: solid 2px #aaaaaa;*/
    border: solid 1.5px #aaaaaa;
    border-radius: 5px;
/*    background: linear-gradient(#cad3de,#e6ecee, #e6ecee, #cad3de);*/
    background-color:#e6ecee;
    outline: none;
    cursor: pointer;
}
/* BGM ON/OFFボタン */
.button_bgmplay{
    margin: 16px 22px 0 auto;
    text-align: right;
}
#btn-play {
    width: 100px;
    padding: 3px;
    font-size: 12px;
    font-weight: bold;
    background-color: #97a6c1;
    border: solid 1.5px #aaaaaa;
    border-radius: 5px;
    background-color:#e6ecee;
    outline: none;
}


@media (min-width: 576px) {
  .container {
      max-width: 540px;
  }
}
@media (min-width: 768px) {
  .container {
      max-width: 720px;
  }
}
@media (min-width: 992px) {
  .container {
      max-width: 960px;
  }
}