.top_img {
  background-image: url('../img/index/top.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  margin: 0;
  height: calc(100vh - 57px);
  position: relative;
  text-align: center;
  z-index: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.top_img::before {
  opacity: 0.4;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  position: absolute;
  content: '';
  background-color: #eee;
  z-index: -1;
}

.top_img div {
  z-index: 1;
}

.top_miraisai {
  font-size: 10vw;
  color: #f5f5f5;
  font-weight: bold;
  text-shadow: 10px 10px 15px rgb(60, 131, 47);
}

.top_miraisai_date {
  font-size: 2.5em;
  color: #f5f5f5;
  text-shadow: 3px 3px 2px rgb(60, 131, 47);
  text-align: right;
}

.theme {
  display: flex;
  justify-content: center;
  align-items: center;
}

.theme_img {
  width: 40vw;
  height: auto;
  margin-right: 5vw;
  max-width: 400px;
}

.theme_desc {
  text-align: left;
}

.googlemaps {
  width: 100%;
}

.embed_twitter {
  width: 90%;
  margin: auto;
}

@media screen and (orientation: portrait) {
  .top_img {
    background-image: url('../img/index/top_mobile.png');
  }
}

/* 900px以下 タブレット用 */
@media screen and (max-width: 900px) {
  .top_miraisai {
    text-shadow: 6px 6px 8px rgb(60, 131, 47);
  }
}

/* 600px以下 スマホ用 */
@media screen and (max-width: 600px) {
  .top_miraisai {
    font-size: 20vw;
    text-shadow: 4px 4px 5px rgb(60, 131, 47);
    line-height: 1.2;
    width: 70vw;
  }

  .top_miraisai_date {
    font-size: 1.3em;
    text-shadow: 2px 2px 1px rgb(60, 131, 47);
    margin-right: 2vw;
  }

  .live_link {
    width: 80%;
    height: 60px;
    line-height: 60px;
    font-size: 1rem;
    margin-top: 3rem;
  }

  .theme {
    flex-wrap: wrap;
  }

  .theme_img {
    margin-right: unset;
    margin-bottom: 1rem;
    width: 50vw;
  }

  .theme_desc .b {
    text-align: center;
  }
}