/* 全画面表示CSS */

.hero {
  height: 100vh; /* 全画面表示 */
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  background-image: url(cosumosu_image1.jpg);
}

/* overlay */

.overlay::after {
  position: absolute;
  top: 0;
  left: 0;
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  background: rgba(0, 0, 255, .2);
}

/* text */

.text-box {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  z-index: 100;
}
.title {
  font-family: Roboto;
  font-size: 50px;
  font-weight: bold;
  line-height: 1.2;
  padding: 0 50px;
  text-align: center;
  color: #fff;
}
.description {
  color: white;
  text-align: center;
}