@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&display=swap');

:root {
  --clr-neon: #fda802;
  --clr-bg: hsl(358, 66%, 23%);
  --clr-heading: hsl(0, 10%, 74%);
}

@font-face {
  font-family: 'Neon Glow';
  src: url(https://assets.codepen.io/230569/NeonGlow-8VLz.ttf);
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-image: url('/bg2.jpg');
  background-position: center 30%;
  background-repeat: no-repeat;
  background-size: cover;
  backdrop-filter: brightness(20%);
}

h1 {
  font-family: 'DM Serif Display', serif;
  font-size: 2.4rem;
  font-size: clamp(1.13rem, calc(0.57rem + 2.36vw), 2.4rem);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--clr-heading);

  margin-bottom: 1em;
}

.clock {
  display: inline-block;
  font-size: 6rem;
  font-size: clamp(2.4rem, calc(0.84rem + 6.66vw), 6rem);
  font-family: 'Neon Glow';
  font-weight: 400;

  color: var(--clr-neon);
  border: var(--clr-bg) 6px solid;
  border-radius: 5px;
  padding: 0.125em 0.5em;
  text-shadow: 0 0 0.125em hsl(0, 10%, 50%), 0 0 0.45em var(--clr-neon);
  box-shadow: inset 0 0 0.3em 0 var(--clr-bg), 0 0 0.55em 0 var(--clr-bg);
}