#help_field {
  position: fixed;
  right: 10px;
  bottom: 10px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 2px solid black;
  transition-duration: .3s;
  cursor: help;
}

#help_field span {
  color: black;
  text-align: center;
  font-size: 2rem;
}

#help_field:hover {
  transform: scale(1.05);
}

#help_popUp {
  display: none;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0, 0.3);
  opacity: 0;
  position: fixed;
  top: 0;
  bottom: 0;
  align-items: center;
  justify-content: center;
  transition-duration: .5s;
  cursor: pointer;
}

#inner_popUp {
  width: 90%;
  padding: .5rem;
  background-color: #333;
  color: white;
  cursor: default;
  border-radius: 10px;
}

#inner_popUp a {
  text-decoration: none;
}