:root {
  --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --medium-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  --dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
  --transition: all 0.3s linear;
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: #ddd;
  font-family: Arial, Helvetica, sans-serif;
}
a {
  text-decoration: none;
}
#error {
  margin: 0 auto;
  padding: 1em;
  min-width: 20rem;
  text-align: center;
}
#form {
  box-shadow: var(--dark-shadow);
  border-radius: 5px;
  background-color: rgb(30, 40, 50);
  color: ivory;
  margin: 10rem auto;
  max-width: 20rem;
  padding: 2em 1em;
  min-height: 15rem;
  display: flex;
  flex-direction: column;
  row-gap: 2em;
  justify-content: center;
}
#title {
  text-align: center;
  font-size: 3em;
  padding: 0;
  margin: 0;
}
#form input {
  border-radius: 5px;
  padding: 0.5em;
  width: 100%;
}
#form button {
  min-width: 90%;
  margin: 0 auto;
  border-radius: 5px;
  background-color: forestgreen;
  color: #222;
  font-weight: bold;
  font-size: 1em;
  padding: 0.5em 0;
  transition: var(--transition);
  cursor: pointer;
}
#form button:hover,
#form button:focus {
  background-color: darkgreen;
}
.password {
  position: relative;
}
#forgot-pass {
  position: absolute;
  right: 0.5em;
  font-size: 0.9em;
  color: darkgreen;
  padding: 0.5em 0;
}
#register {
  display: flex;
  column-gap: 1em;
  align-items: center;
  color: ivory;
  margin: 0 auto;
}
#register a {
  color: yellowgreen;
  transition: var(--transition);
}
#register a:hover,
#register a:focus {
  color: green;
}

#login {
  display: flex;
  column-gap: 1em;
  align-items: center;
  color: ivory;
  margin: 0 auto;
}
#login a {
  color: yellowgreen;
  transition: var(--transition);
}
#login a:hover,
#login a:focus {
  color: green;
}