.galleryContainer {
    width: 930px;
    overflow: auto; 
}

.galleryThumbnail {
    padding: 10px 5px 10px 5px;
    float: left;
    font-size: 12px;
    text-align: center;
}

.galleryThumbnail img {
    width: 220px;
    filter: hue-rotate(180deg) saturate(6) contrast(65%);
    transition: 0.3s;
}

.galleryThumbnail img:hover {
    cursor: pointer;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    transition: 0.3s;
}


/* CSS for Gallery Overlay */

#overlay {

    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 20px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.85);

}

#closeButton {
  color: white;
  position: absolute;
  top: 0px;
  right: 15px;
  font-size: 55px;
  font-weight: bold;
}

#closeButton:hover,
#closeButton:focus {
  color: #999;
  text-decoration: none;
  cursor: pointer;
}

    /* Toggle Switch */
    /* The switch - the box around the slider */
    .switch {
        position: absolute;
        display: inline-block;
        width: 60px;
        height: 34px;
        margin-left: 15px;
    }
    
    /* Hide default HTML checkbox */
    .switch input {
        opacity: 0;
        width: 0;
        height: 0;
    }
    
    /* The slider */
    .slider {
        position: absolute;
        cursor: pointer;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: #ccc;
        -webkit-transition: .4s;
        transition: .4s;
    }
    
    .slider:before {
        position: absolute;
        content: "";
        height: 26px;
        width: 26px;
        left: 4px;
        bottom: 4px;
        background-color: white;
        -webkit-transition: .4s;
        transition: .4s;
    }
    
    input:checked + .slider {
        background-color: red;
    }
    
    input:focus + .slider {
        box-shadow: 0 0 1px red;
    }
    
    input:checked + .slider:before {
        -webkit-transform: translateX(26px);
        -ms-transform: translateX(26px);
        transform: translateX(26px);
    }
    
    /* Rounded sliders */
    .slider.round {
        border-radius: 34px;
    }
    
    .slider.round:before {
        border-radius: 50%;
    } 

    /* Switch Label */
    .switchLabel {
        position: absolute;
        color: white;
        text-align: center;
        margin-top: 38px;
        margin-left: 14px;
    }


/* Overlay Content */

.overlay-content {
   /* border: 1px solid red; */
    position: relative;
    margin: auto;
    width: 75%;
    height: 95%;
    display: flex;
    align-items: center;
    justify-content: center;
    
}

.mySlides {
    display: none;
    max-height: 100%;
}


/* Next & previous buttons */
.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  padding: 16px;
  margin-top: -50px;
  color: white;
  font-weight: bold;
  font-size: 55px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
  -webkit-user-select: none;
}

/* Position the "next button" to the right */
.next {
    right: 0;
    border-radius: 3px 0 0 3px;
}
  
/* On hover, add a black background color with a little bit see-through */
.prev:hover,
.next:hover {
    background-color: rgba(0, 0, 0, 0.8);
}