body {
  display: flex;
  flex-wrap: wrap;
  line-height: 1.8;
}

#main-ele {
  font-size: larger;
  font-weight: bolder;
  background-color: gray;
  padding: 10px;
  width: 100%;
}

div {
  font-size: large;
  font-weight: bold;
  background-color: lightgrey;
  padding: 10px;
}

p {
  background-color: lightblue;
  padding: 10px;
  font-weight: bold;
}

form {
  font-size: larger;
  font-weight: bolder;
  background-color: gray;
  padding: 10px;
  width: 100%;
}

.example {
  width: 40%;
  margin: 20px;
}

ul {
  font-size: large;
  font-weight: bold;
  background-color: gray;
  padding: 10px;
  list-style: none;
}

li {
  margin: 5px;
  background-color: lightblue;
  padding: 10px;
}