.html-embed {
  position: fixed;
  left: 0%;
  top: 0%;
  right: auto;
  bottom: auto;
  width: 100%;
  height: 110%;
  margin-bottom: 0px;
}

.button {
  position: absolute;
  left: 0%;
  top: 0%;
  right: 0%;
  bottom: auto;
  width: 80px;
  height: 80px;
  background-image: url('../images/plus_wht.png');
  background-position: 50% 50%;
  background-size: 50% 50%;
  background-repeat: no-repeat;
  cursor: pointer;
}

.button.down-button {
  margin-top: 90px;
  background-image: none;
  background-size: auto;
  background-repeat: repeat;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  color: #fff;
  font-size: 70px;
  line-height: 50px;
  font-weight: 100;
  text-align: center;
}

.button.up-button {
  background-image: none;
  background-size: auto;
  background-repeat: repeat;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  color: #fffefe;
  font-size: 50px;
  line-height: 70px;
  font-weight: 100;
  text-align: center;
  text-decoration: none;
}

.button-panel {
  position: absolute;
  left: 0%;
  top: auto;
  right: 0%;
  bottom: 0%;
  display: block;
  width: 50px;
  height: 160px;
  margin-bottom: -130px;
  opacity: 1;
}

.panel-position {
  position: absolute;
  left: 0%;
  top: 0%;
  right: auto;
  bottom: auto;
  display: block;
  width: 50px;
  height: 50%;
}

@media screen and (max-width: 991px) {
  .button {
    background-size: 50% 50%;
  }
  .button.down-button {
    background-size: 50% 30%;
  }
  .button-panel {
    margin-bottom: -294px;
  }
  .panel-position {
    width: 0px;
  }
}

@media screen and (max-width: 767px) {
  .button {
    background-size: 50% 50%;
  }
  .button.down-button {
    background-size: 50% 30%;
  }
  .button-panel {
    margin-bottom: -310px;
  }
}

@media screen and (max-width: 479px) {
  .button {
    margin-top: 22px;
    background-size: 50% 50%;
  }
  .button.down-button {
    margin-top: 111px;
    background-size: 50% 30%;
  }
  .button-panel {
    margin-bottom: -280px;
    margin-left: 7px;
    opacity: 1;
  }
  .panel-position {
    opacity: 1;
  }
}