HTMLify

* {
  margin: 0;
  padding: 0;
}
.main_body{
 background-color: rgb(90, 92, 207);
}
#myImg {
  height: 400px;
  width: 500px;
}
.center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 5px solid #FFFF00;
  padding: 10px;
}
.div_btn{
  width: 100%;
  display: flex;
  justify-content: center;
}
.btn{
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 25px;
  margin: 4px 2px;
  cursor: pointer;
}