* {
  margin: 0;
  padding: 0;
}

form {
  display: flex;
  align-items: center;
}
button {
  color: white;
  background-color: black;
  border: 2px gray solid;
  padding: 3px;
  font-size: 15px;
  margin: 10px;
  box-shadow: 1px 1px 1px 1px aquamarine;
}
input {
  border: 2px rgb(25, 242, 220) solid;
  background: transparent;
  font-size: 20px;
  letter-spacing: 1px;
  box-shadow: 1px 1px 1px 1px red;
}
input:focus {
  outline: none;
  border: 2px rgb(51, 238, 213) solid;
  /* color: green; */
}
.vice-versa {
  color: #0edac7;
  transform: rotate(90deg);
  font-size: 30px;
  background-color: white;
  box-shadow: 2px 2px 2px 2px grey;
}
h3 {
  font-family: cursive;
  margin: 4px;
  color: #ff7d00;
  text-shadow: 1.5px 1.5px gray;
}
.center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 90vh;
}
article {
  margin: 20px;
  padding: 10px;
  box-shadow: 2px 2px 2px 2px grey;
  background-color: white;
}