.image-rate {
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: -webkit-flex;
  display: flex;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-align-items: center;
  align-items: center;
}

.image-rate img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 85%;
}

#myBtn {
  position: fixed;
  bottom: 0;
  left: calc(0.6vw + 0.6vh);
  font-size: calc(35px + 1vw);
}

#num, #counter {
  position: fixed;
  right: 0.5vw;
  z-index: 5;
  border: 0;
  border-radius: 0.25rem;
  font-size: calc(10px + 0.2vw + 0.2vh);
  line-height: 1.2;
  text-decoration: none;
  padding: 0.3rem 0.5rem;
  margin: 0.25rem;
  background-color: #3CB371BF;
  color: #00000080;
}

#counter { bottom: 0.5vh; }
#num { top: 0.5vh; }