.textbox {
  display: inline-block;
  border-color: rgba(100,190,12,0.7);
  background-color: rgba(255,255,255,0.7);
  text-align: center;
  border-style: solid;
  border-radius: 0.625em;
  border-width: 0.1875em;
}
.textbox h1 {
  text-align: center;
}