body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

h1 {
  text-align: center;
  margin-top: 20px;
}

p {
  margin: 20px;
}

ul {
  margin: 20px;
  padding-left: 40px;
  list-style: none;
}

li {
  margin-top: 10px;
}

img {
  display: block;
  margin: 20px auto;
  max-width: 100%;
  border-radius: 10px;
}

#boys-image {
  display: none;
}

@media screen and (min-width: 600px) {
  ul {
    display: flex;
    flex-wrap: wrap;
  }

  li {
    width: 50%;
    padding: 10px;
    box-sizing: border-box;
  }
}