:root {
  --theme:  rgb(0, 219 , 124);
  --background: rgb(220, 240, 220);
  --black: rgb(30, 30, 30);
  --white: rgb(240, 240, 240);
  --gray: rgb(67, 67, 67);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  padding: 0px;
  margin: 0px;
  min-height: 100vh;
  background-color: var(--black);
  background-image: linear-gradient(to left, rgba(0, 219, 124, 0.3), rgba(0, 255, 145, 0.5));
}

main {
  width: 100%;
  padding-top: 0px;
}

button {
  cursor: pointer;
}

.content-centered-column,
.content-centered-row {
  display: flex;
  align-items: center;
  justify-content: center;
}

.content-centered-column {
  flex-direction: column;
}

.content-centered-row {
  flex-direction: row;
}

@media (max-width: 700px) {
  header {
    position: static;
    justify-content: center;
    padding: 10px 12px;
  }

  header > div,
  header nav {
    flex: 1 1 100%;
  }

  header nav {
    order: 3;
  }

  main {
    width: 100%;
    padding-top: 0px;
  }

  section {
    flex-direction: column;
    gap: 24px;
  }

  section aside {
    width: 100%;
    flex-basis: auto;
  }

  .big {
    font-size: clamp(2.25rem, 12vw, 4rem);
  }

  .medium {
    font-size: 1.1rem;
  }
}