body {
  color: limegreen;
  background-color: rgb(255, 101, 54);
}

button {
  padding: 5px;
  margin: 5px;
}

.center-class {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.main-container {
  background-color: rgb(0, 0, 255);
  padding: 50px;
  margin: 20px;
  opacity: 1;
  width: 80%;
}

#row-container {
  display: flex;
  flex-direction: row;
  justify-content: space-evenly;
  align-items: center;
  padding: 10px;
  margin: 10px;
}

.child-div {
  background-color: yellow;
}

#spanner {
  background-color: purple;
  width: 80%;
  font-size: large;
}

.master-div {
  padding: 40px;
}

.hide-class {
  visibility: hidden;
  color: rgb(65, 225, 73);
}