*
{
  margin: :0;
  padding: 0;
}

section
{
  display: flex;
  flex-direction: column;
  align-items: center;
}

.montage
{
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 20px;
  margin-bottom: 50px;
}

#cercle
{
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
}



.bas
{
  display: flex;
  flex-direction: row;
}

h1
{
  font-size: 40px;
  font-weight: bold;
  display: flex;
  text-align: center;
  margin-left: 50px;
  margin-right: 50px;
}

#titre
{
  display: flex;
  align-items: center;
}

#titreResponsive
{
  display: none;
}

@media screen and (max-width: 700px)
{
  section, .montage, .bas
  {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
  }

  #anges
  {
    width: 50%;
    margin-left: 50%;
    transform: translateX(-50%);
  }

  #cercle
  {
    position: static;
    margin: 50%;
    transform: translateX(-50%);
  }

  h1
  {
    display: none;
  }

  #titreResponsive
  {
    display: flex;
    justify-content: center;
    font-size: 40px;
    font-weight: bold;
    text-align: center;
    margin-top: 4%;
  }

  section img
  {
    margin: 20px;
  }
}