.slider-bg1 {
    background-image: url('../img/front.jpg');
  }
  
  .slider-bg4 {
    background-image: url('../img/front.jpg');
  }
  .slider-bg3{
    background-image: url('../img/front.jpg');
  }
  .smallimage{
      width: 100px;
      height : 100px;
  }