body {
  font-family: monospace;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

body,
input {
  background-color: #000;
  color: #007fff;
}

input {
  border: 1px solid #ffa500;
  padding: 2px;
}

input:focus {
  outline: none;
  border: 1px solid #007fff;
}

input.invalid {
  border: 1px solid #ee0000;
}


input,
table {
  width: 200px;
  box-sizing: border-box;
}

table:not(:empty),
td {
  border: 1px solid #007fff;
}