body {
  background-color: rgb(0,0,0);
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
  height: 100vh;
}
* {
  font-size: 1.2em;
  padding: .2em 1em;
}
input[type="text"] {
  display: none;
}
input[type="password"] {
  display: block;
  width: 8em;
  max-width: 100%;
  border-radius: 1em 1em 0 0;
}
button {
  margin-top: .2em;
  border-radius: 0 0 1em 1em;
  cursor: pointer;
}
input,button {
  border: .3em solid rgb(220,220,220);
  background-color: rgb(50,50,50);
  color: rgb(255,255,255);
  font-weight: bold;
}