.slider {
  margin: 30px auto 0px auto;
  max-width: 100%;
  width: 100%;
  height: 100%;
}

.slide_viewer {
  height: 80vh;
  width: 100%;
  overflow: hidden;
  position: relative;
}

.slide_group {
  height: 100%;
  position: relative;
  width: 100%;
}

.slide {
  display: none;
  height: 100%;
  position: absolute;
  width: 100%;
}

/*
.slide > img {
  border: 1px solid #e2e2e2;
  border-radius: 9px;
}
*/

.slide:first-child {
  display: block;
}

.slide:nth-of-type(1) {

}

.slide:nth-of-type(2) {
}

.slide:nth-of-type(3) {
background-color: yellow;
}

.slide:nth-of-type(4) {
  background-color: green;

}

.slide_buttons {
  left: 0;
  position: absolute;
  right: 0;
  text-align: center;
}




@media only screen and (max-width: 375px) {

  .slider {
  margin: 0 auto;
  max-width: 100%;
}

    .slide_viewer {
      height: 143px;
      width: 375px;
      overflow: hidden;
      position: relative;
    }

}

/*Tablet Kısım */
    @media screen and (min-width: 376px) and (max-width: 750px) {

      .slider {
  margin: 0 auto;
  max-width: 100%;
}

.slide_viewer {
      height: 267px;
      width: 700px;
      overflow: hidden;
      position: relative;
    }
        
    
    }