* {
  margin: 0;
  padding: 0;
  transition-duration: 1s;
}

#container-js {
  background-color: orange;
  height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

h1 {
  width: 300px;
  height: 300px;
  border-radius: 200px;
  background-color: wheat;
  font-size: 40px;
  border: 5px solid saddlebrown;
  font-family: Arial, Helvetica, sans-serif;
  display: flex;
  align-items: center;
  transition-duration: 1s;
  justify-content: center;
  box-shadow: 2px 2px 32px -2px black;
}
h1:hover{
    transform: rotate(360deg);
}