.col-90,
.col-50
{
   
  text-align:center;
    color:black;
    padding:1%;
    font-size: 1em;
  width: 100%;
}

@media screen and (min-width: 768px) {
  .row {
    display: flex;
    flex-wrap: wrap;
  }

  .col-50 {
      

   flex-basis: 50%;
      
  }
    .col-90{
        flex-basis: 50%;
        
    }
}

.titelbild{
       width:90%;
  height:auto;
display: block;
  object-fit: cover;
      box-shadow:-3px 5px 15px #000;
      margin: 2% auto;
}



.gallery-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  background-color: #fff;
  box-shadow: 0 0 3px 0 rgba(0, 0, 0, 0.3);
  width: 80%;
  margin: 0 auto;
  padding: 10px;
}
.gallery-item {
  flex-basis: 32.7%;
  margin-bottom: 6px;
  opacity: .85;
  cursor: pointer;
}
.gallery-item:hover {
  opacity: 1;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gallery-content {
  font-size: .8em;
}

.lightbox {
  position: fixed;
  display: none;
  background-color: rgba(0, 0, 0, 0.8);
  width: 100%;
  height: 100%;              
  overflow: auto;
  top: 0;
  left: 0;
}

.lightbox-content {
  position: relative;
  width: 50%;
  max-height: 5%;
  margin: 8% auto;
}
.lightbox-content img {
  border-radius: 7px;
  box-shadow: 0 0 3px 0 rgba(225, 225, 225, .25);
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background-color: rgba(0, 0, 0, 0.8);
  color: #fff;
  padding: 7px;
  margin: 25% auto;
  cursor: pointer;
}
.lightbox-prev {
  left: 0;
}
.lightbox-next {
  right: 0;
}
.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: .8;
}

@media only screen and (min-width: 767px)and(max-width: 920px) {
  .gallery-container {
      width: 100%;
  }
  .gallery-item {
      flex-basis: 49.80%;
      margin-bottom: 3px;
  }
  .lightbox-content {
      width: 80%;
      max-height: 52%;
      margin: 15% auto;
  }
  .lightbox-prev, .lightbox-next {
    position: absolute;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 7px;
    margin-top: 50%;
    cursor: pointer;
}
}
@media only screen and (min-width: 320px) and (max-width: 766px) {
  .gallery-item {
      flex-basis: 100%;
      margin-bottom: 1px;
  }
  .lightbox-content {
    width: 94%;
    margin: 50% auto;
  }

  .lightbox-prev, .lightbox-next {
    position: absolute;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 7px;
    margin-top: 26%;
    cursor: pointer;
}
}