styles.css

* {
  font-family: Euclid, sans-serif;
}

.center {
  display: block;
  text-decoration: none;
  text-align: center;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

#logo {
  max-width: 125px;
  max-height: 125px;
  margin: 15px auto;
}

#logo img {
  height: 100%;
  width: 100%;
}

#response-text {
  transition-duration: 200ms;
  opacity: 0;
  visibility: hidden;
}

#response-text.active {
  opacity: 1;
  visibility: visible;
}

#response-button {
  border: none;
  transition-duration: 200ms;
  opacity: 0;
  visibility: hidden;
  background-color: white;
  border: 1px solid #037dd6;
  font-weight: bold;
  color: #037dd6;
  border-radius: 100px;
  margin: 10px;
  margin-top: 21px;
  height: 45px;
  width: 170px;
}

#response-button.active {
  opacity: 1;
  visibility: visible;
}

#response-button:hover {
  cursor: pointer;
  box-shadow: lightgray 0px 0px 10px;
}