body {
  background-color: #f6f7c4;
  margin-left: 50px;
  margin-right: 50px;
  align-items: center;
}
.greeting {
  font-size: 5vmin;
  margin: 2px 0;
}
.instructions {
  font-size: 2vmax;
  margin: 2px 0;
}
input[type=text], select, textarea {
  width: 100%;
  padding: 14px 20px;
  margin: 4px 0;
  display: inline-block;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-sizing: border-box;
  background-color: rgba(0, 0, 0, 0.25);
  color: white;
  text-align: center;
  font-size: 6vmin;
}
button {
  width: 48%;
  background-color: rgba(135, 204, 135, 0.5);
  border-radius: 4px;
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin: 4px 0;
  font-size: 6vmin;
}
button:hover {
  background-color: #45a049;
  }
.center {
  text-align: center;
}
.divAnswer {
  display: inline-block;
  min-width: 48%;
  border-radius: 5px;
  margin: 6px;
  height: auto;
  padding: 12px;
  border: 2px solid rgba(0, 0, 0, 0.5);
  background-color: rgba(135, 204, 135, 0.5);
  font-size: 6vmin;
  vertical-align: middle;
}
.divMessage {
  display: inline-block;
  min-width: 48%;
  border-radius: 5px;
  margin: 6px;
  height: auto;
  padding: 12px;
  border: 2px solid rgba(0, 0, 0, 0.5);
  background-color: rgba(173, 216, 230, 0.5);
  font-size: 6vmin;
  vertical-align: middle;
}