.ContactButton {
  position: fixed;
  top: 6vw;
  right: 0;
  z-index: 1000;
}

.ContactButton .SP {
  display: none;
}

@media (max-width: 851px) {
  .ContactButton {
    top: auto;
    bottom: 0;
    left: 0;
  }
  .ContactButton .PC {
    display: none;
  }
  .ContactButton .SP {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 70px;
    text-align: center;
    background-color: #000;
    font-size: 18px;
    letter-spacing: 0.1em;
    color: #fff;
  }
}