body {
  background-color: aqua;
  border: 4px solid gray;
  border-radius: 12px;
}

h1 {
  text-align: center;
  font-weight: bold;
  color: red;
}

ul {
  list-style-type: none;
}

li {
  display: inline;
  padding: 4px;
}
img {
     width: 150px;
     height: auto;
     display: block;
     margin: 10px auto;
}