* {
  box-sizing: border-box;
}

body {
  background-color: black;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

form {
  display: grid;
  gap: 1em;
}

.row.center {
  text-align: center;
}

label {
  display: block;
}

button {
  background-color: #990000;
  color: white;
  padding: 5px 10px;
  border: 1px #FF0000 solid;
}

[popover] {
  max-width: calc(100% - 40px);
  max-height: calc(100% - 40px);
  background-color: black;
  border: 1px #FF0000 solid;
  padding: 20px;
  color: white;
}

::backdrop {
  background-color: rgba(0, 0, 0, .5);
}

#secretlink {
  display: none;
}