/* --- フローティングバナー --- */
.banner {
  position: fixed;
  width: 300px;
  height: 200px;
  z-index: 99998;
  right: 6em;
  bottom: 3em;
}
.banner:hover {
  transition: opacity 0.3s ease;
  opacity: 0.7;
}
.banner_close {
  position: absolute;
  top: -8%;
  right: -5%;
  cursor: pointer;
  transition: opacity .6s;
  width: 2em;
  height: 2em;
  background-color: #000;
  border-radius: 50%;
  z-index: 99999;
}
.banner_closebtn::before, .banner_closebtn::after {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 1px;
    background: #fff;
    content: '';
}
.banner_closebtn::before {
    transform: translate(-50%, -50%) rotate(45deg);
}
.banner_closebtn::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

@media screen and (max-width: 1000px) {
  .banner {
    right: 1.5em;
  }
}