.sf-presentation-img {
  display: flex;
  flex-wrap: wrap;
  max-width: 90%;
  margin: 0 auto;
  padding: 50px 0 0;
  box-sizing: border-box;
  min-height: 90vh;
}

.sf-presentation-break {
  width: 100%;
  margin: 40px 0;
}

.sf-presentation-box {
  flex: 1;
  overflow: hidden;
  transition: 2s;
  margin: 0 4%;
  line-height: 0;
  width: 27%;
  min-height: 90vh;
}

.sf-presentation-box > img {
  width: 200%;
  height: calc(100% - 5vh);
  object-fit: cover; 
  transition: 2s;
}

.sf-presentation-box:hover { 
  flex: 1 1 65%;
}

.sf-presentation-box:hover > img {
  width: 100%;
  height: 100%;
}
 
@media (max-width: 959px) {
  .sf-presentation-img {
      height: auto;
      flex-wrap: wrap;
  }

  .sf-presentation-box {
      flex: 1 1 auto;
      width: 100%;
  }
}