body {
  background: #e8ebff;
  display: flex;
  flex-direction: column;
  align-items: center;
}

img {
  height: 75vh;
  border-radius: 10px;
  margin: 30px 0;
  box-shadow: 3px 3px 15px rgba(0,0,0,0.1);
}

img:first-child {
  margin-right: 30px;
}

a {
  text-decoration: none;
}

/* gradient styles from https://gradientbuttons.colorion.co/ */
#rsvp-button {
  background-image: linear-gradient(to right, #7474BF 0%, #348AC7  51%, #7474BF  100%);
  margin: 10px;
  padding: 20px 45px;
  transition: 0.5s;
  background-size: 200% auto;
  color: white;
  border: 0;
  border-radius: 12px;
  display: block;
  cursor: pointer;
  font-size: large;
  font-weight: bold;
}

#rsvp-button:hover {
  background-position: right center;
  font-size: larger;
}

@media screen and (max-width: 980px) {
  .card {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  img {
    margin: 10px;
    height: 100%;
    width: 60vw;
  }

  img:first-child {
    margin-right: 0;
  }

  #rsvp-button {
    padding: 30px;
  }
}

@media screen and (max-width: 500px) {
  img {
    margin: 10px;
    height: 100%;
    width: calc(100% - 20px);
  }
}