:root {
  --primary: #04406e;
  --secondary: #1a2327;
  --gray: #969696;
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

/* ******* others****** */

body {
  text-align: center;
  padding: 2rem;
  background-color: var(--secondary);
}
header > h1 {
  font-size: 2rem;
  font-weight: 500;
  color: #fff;
  margin: 1rem;
}

.input,
.btn-check {
  display: block;
  font-size: 1rem;
  margin: 1.5rem auto;
  width: 30rem;
  padding: 1rem 2rem;
  border: none;
}

.input {
  background-color: #111111;
  color: #fff;
}

.btn-check {
  display: inline-block;
  background-color: var(--primary);
  color: #fff;
  letter-spacing: 0.4px;
  font-weight: 500;
  margin-top: 1rem;
}

.output {
  color: #fff;
  padding: 1rem;
  font-size: 1.3rem;
}

/* *****footer****** */

footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  margin-top: 1rem;
  font-size: 2rem;
  font-weight: 300;
  padding: 0.3rem;
  text-align: center;
  color: var(--gray);
}

.footer-links {
  display: inline-block;
  color: var(--gray);
  padding: 0 1rem 0;
  text-decoration: none;
  font-size: 1.5rem;
}

.footer-links:hover {
  transform: scale(1.05);
}

.footer-name {
  font-size: 1rem;
  letter-spacing: 0.4px;
  padding: 0.3rem 0.3rem 0;
  font-weight: 400;
}