h1 {
    font-weight: 100;
    margin: 0;
}

section {
    column-width: 300px;
    column-gap: 5px;
    padding: 5px;
}

section img {
    width: 100%;
    cursor: pointer;
}

.lightbox {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    display: none;
    background: #7f8c8d;
    perspective: 1000;
}

.filter {
    position: absolute;
    width: 100%;
    height: 100%;
    filter: blur(20px);
    opacity: 0.5;
    background-position: center;
    background-size: cover;
}

.lightbox img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotateY(0deg);
    max-height: 95vh;
    max-width: calc(95vw - 100px);
    transition: 0.8s cubic-bezier(0.7, 0, 0.4, 1);
    transform-style: preserve-3d;
}


/*.lightbox:hover img{
  transform: translate(-50%, -50%) rotateY(180deg);
}*/

[class^="arrow"] {
    height: 200px;
    width: 50px;
    background: rgba(0, 0, 0, 0.4);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
}

[class^="arrow"]:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    width: 15px;
    height: 15px;
}

.arrowr {
    right: 0;
}

.arrowr:after {
    border-right: 1px solid white;
    border-bottom: 1px solid white;
}

.arrowl {
    left: 0;
}

.arrowl:after {
    border-left: 1px solid white;
    border-top: 1px solid white;
}

.close {
    position: absolute;
    right: 0;
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.4);
    margin: 20px;
    cursor: pointer;
}

.close:after,
.close:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1px;
    height: 100%;
    background: #e74c3c;
}

.close:after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.close:before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.title {
    font-size: 20px;
    color: #000;
    z-index: 1000;
    position: absolute;
    top: 0;
    left: 0;
}