.sliders {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 40px;
  padding: 5px;
  background-color: #f9f9f9;
  border: 2px solid lightgray;
  width: 90%;
}

.slider {
  width: 95%;
}
  
h1 {
  text-align: center;
}