@font-face {
  font-family: 'Source Sans Pro';
  src: url('../../../fonts/source/sourceSansPro-bold.woff2') format('woff2'), url('../../../fonts/source/sourceSansPro-bold.woff') format('woff'), url('../../../fonts/source/sourceSansPro-bold.ttf') format('truetype');
  font-weight: bold;
  font-style: normal;
}
@font-face {
  font-family: 'Source Sans Pro';
  src: url('../../../fonts/source/sourceSansPro-regular.woff2') format('woff2'), url('../../../fonts/source/sourceSansPro-regular.woff') format('woff'), url('../../../fonts/source/sourceSansPro-regular.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}
.hide {
  display: none;
}
.absolute_center {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
}
.transform_center {
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%) translateY(-50%);
  -webkit-transform: translate(-50%) translateY(-50%);
  transform: translate(-50%) translateY(-50%);
}
.unselectable {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
*,
*:before,
*:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-size: 62.5%;
}
body {
  position: relative;
  z-index: 0;
  min-width: 320px;
  padding: 0 20px;
  font-family: 'Source Sans Pro', sans-serif;
  font-size: 1.4rem;
  line-height: 1.2em;
  background-color: #f0f0f0;
  color: #111111;
}
label {
  cursor: pointer;
}
div {
  overflow: hidden;
}
main,
header,
footer {
  display: block;
}
main {
  max-width: 100%;
  width: 800px;
  margin: 0 auto 60px;
  padding-top: 20px;
}
table {
  border-collapse: collapse;
}
h1 {
  margin-bottom: 30px;
  font-size: 7rem;
  line-height: 0.9em;
  text-align: center;
}
.game_wrap {
  position: relative;
  width: 100%;
  padding-bottom: 62.5%;
}
.game_wrap .ctx {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-repeat: no-repeat;
}
.game_wrap .ctx_bg {
  background: linear-gradient(to right, transparent 49%, #ffffff 49%, #ffffff 51%, transparent 51%), linear-gradient(#212121, #212121);
}
.ctx_cover {
  background: rgba(33, 33, 33, 0.8);
  cursor: pointer;
}
.play_game .ctx_cover {
  display: none;
}
.ctx_cover .ctx_cover_content {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-weight: bold;
  font-size: 6rem;
  line-height: 1.2em;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -ms-transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
}
.btn_wrap {
  height: 80px;
  border: 1px solid #d0d0d0;
  display: none;
}
.is_touch .btn_wrap {
  display: block;
}
.btn_wrap .btn {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  height: 100%;
  width: 50%;
  float: left;
  line-height: 80px;
  text-align: center;
  font-weight: bold;
  cursor: pointer;
  font-size: 2rem;
  background-color: #fff;
}
.btn_wrap .btn_up {
  border-right: 1px solid #d0d0d0;
}
@media all and (max-width: 800px) {
  h1 {
    font-size: 6rem;
  }
}
@media all and (max-width: 600px) {
  .ctx_cover .ctx_cover_content {
    font-size: 10vw;
  }
}
@media all and (max-width: 400px) {
  h1 {
    font-size: 4.5rem;
  }
}