h1 {
  text-align: center;
}
nav {
  display: flex;
  width: 200px;
  flex-direction: column;
}

.drop-btn {
  display: none;
}

#frame {
  background-color: blue;
  padding: 10px;
  text-align: center;
}

img {
  height: 200px;
  width: 200px;
  padding: 20px;
  background-color: red;
  display: none;
}

#slide-btn {
  display: flex;
  justify-content: space-evenly;
  margin: 20px;
}

#slide-btn > button {
  height: 50px;
  width: 200px;
}

#active-btn {
  margin: 20px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

#active-btn > button {
  height: 50px;
  width: 50px;
}

button:hover {
  background-color: rgb(199, 199, 199) !important;
}