:root {
  --main-color: #000;
  --secondary-color: #00bfff;
  --white-color: #fff;
}

* {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
}

.anton-regular {
  font-family: 'Anton', sans-serif;
  font-weight: 400;
  font-style: normal;
}

.inter {
  font-family: 'Inter', sans-serif;
  font-optical-sizing: auto;
}

.body {
  width: 100%;
  background-color: var(--main-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--white-color);
  min-height: 100vh;
}

header {
  color: var(--white-color);
  margin-bottom: 10px;
  font-size: 48px;
}

.start-button {
  display: block;
  border: 1px solid var(--secondary-color);
  width: 230px;
  height: 60px;
  border-radius: 12px;
  color: var(--secondary-color);
  font-size: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: auto;
}

.descr {
  display: block;
  text-align: center;
  color: var(--secondary-color);
  font-size: 16px;
  margin-bottom: 70px;
}

.footer-p {
  font-size: 16px;
}

main {
  flex: 1;
}

@media screen and (max-width: 768px) {
  .body {
    padding: 20px 32px;
  }

  .image-container {
    width: 310px;
    height: 316px;
    margin-bottom: 10px;
  }
}

@media screen and (min-width: 769px) {
  .body {
    padding: 30px 40px;
  }

  .image-container {
    width: 385px;
    height: 388px;
    margin-bottom: 28px;
  }

  .header {
    font-size: 64px;
  }

  .descr {
    font-size: 20px;
  }
}

@media screen and (min-width: 1440px) {
  .body {
    padding: 40px;
  }

  .image-container {
    width: 514px;
    height: 522px;
    margin-bottom: 42px;
  }

  .header {
    font-size: 80px;
  }

  .descr {
    font-size: 24px;
  }

  .start-button {
    font-size: 24px;
  }
}