*{
  box-sizing:border-box;
  margin:0;
  padding:0;
}
body {
  height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  background-color: #212121;
  font-family:arial;
}
.input {
  border-radius: 10px;
  outline: 2px solid #FEBF00;
  border: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: #e2e2e2;
  outline-offset: 3px;
  padding: 10px 1rem;
  transition: 0.25s;
}

.input:focus {
  outline-offset: 5px;
  background-color: #fff
}