div.image-container {
  position: relative;
  width: 700px;
  height: 1000px;
  background-image: url('plakat.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
div.countdown-overlay {
  position: absolute;
  top: 87.5%;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(200,200,200,0.3);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0px;
}
div.link-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 50%;
  transform: translateX(50%);
}
div#reg-link-ru {
  position: absolute;
  top: 20%;
}
div#reg-link-de {
  position: absolute;
  top: 80%;
}
h1 {
  font-size: 40px;
  font-family: 'Arial';
}

a.link-fill {
  display: inline-block;
  background-color: rgba(128,78,43,0.7);
  color: white;
  padding: 1rem 5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-family: 'Lora';
  font-size: 20px;
}
a.link-fill:hover {
  background-color: rgba(140,95,52,0.8);
}

@media (max-width: 800px) {
  div.image-container {
    width: 475px;
    height: 750px;
  }
  a.link-fill {
    font-size: 14px;
    padding: 0.7rem 2rem;
  }
  h1 {
    font-size: 28px;
  }
}

@media (max-width: 480px) {
  div.image-container {
    width: 300px;
    height: 480px;
  }
  a.link-fill {
    font-size: 12px;
    padding: 0.5rem 1rem;
  }
  div.countdown-overlay {
    color: white;
    padding-top: 0px;
    padding-bottom: 0.25rem;
    border-radius: 0px;
  }
  h1 {
    font-size: 18px;
  }
}

@media (max-width: 300px) {
  div.image-container {
    width: 250px;
    height: 400px;
  }
  a.link-fill {
    font-size: 10px;
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
  }
  div.countdown-overlay {
    color: white;
    padding-top: 0px;
    padding-bottom: 0.25rem;
    border-radius: 0px;
  }
  h1 {
    font-size: 14px;
  }
}

@media (max-width: 300px) {
  div.image-container {
    width: 250px;
    height: 400px;
  }
  a.link-fill {
    font-size: 10px;
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
  }
  div.countdown-overlay {
    color: white;
    padding-top: 0px;
    padding-bottom: 0.25rem;
    border-radius: 0px;
  }
  h1 {
    font-size: 14px;
  }
  div#reg-link-de {
    top: 75%;
  }
  div.countdown-overlay {
    top: 82.5%;
  }
}