.header {
  text-align: center;
  margin-bottom: 20px;
}

.header img {
  display: block;
  margin: 0 auto 10px;
  padding-top: 200px;
  max-width: 100%;
  height: auto;
  max-height: 200px;
}

body {
  font-family: Helvetica, Arial, sans-serif;
  font-weight: normal;
  margin: 0;
  height: 100vh;                     /* full viewport height */
  display: flex;                     /* enable flexbox */
  justify-content: center;           /* horizontal center */
  align-items: center;               /* vertical center */
  text-align: center;                /* center text inside */
  flex-direction: column;            /* stack items vertically */
  padding: 20px;
  box-sizing: border-box;
  background-image: url("bg.JPG");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  background-attachment: fixed;
  background-color: black;
  color: white
}

span {
  font-family: Helvetica, Arial, sans-serif;
  font-weight: bold;
}

a:link {
  color: lightsteelblue;
  background-color: transparent;
  text-decoration: underline;
}

a:visited {
  color: lightsteelblue;
  background-color: transparent;
  text-decoration: none;
}

h1 {
  font-family: Helvetica, Arial, sans-serif;
  font-weight: bold;
  font-size: 2.5rem;
  margin: 0;
}

.copyright {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 0.8rem;
}

.countdown {
  font-family: Helvetica, Arial, sans-serif;
  font-weight: bold;
}

.instagram {
  margin: 10px;
  text-align: center;
  justify-content: center;
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }
}