img.Thematic {
  display: block;
  margin: auto;
  width: 70%;
  border-radius: 2rem;
}

main ul {
  margin-left: 14rem;
}

p {
  text-align: center;
}
  p.First {
    font-weight: bold;
  }

h2, h3 {
  text-align: center;
}
  h3 a {
    text-shadow: none;
  }

@media only screen and (min-width: 380px) {
  .Topic {
    display: inline-block;
    width: 49%;
  }
}

@media only screen and (min-width: 720px) {
  .Topic {
    display: inline-block;
    width: 33%;
  }
}

main img.Tool {
  display: none;
}

@media only screen and (min-width: 780px) {

  main {
    position: relative;
  }
  main img.Tool {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 22%;
  }

}