.image-gallery {
    max-width: 80%;
    margin: 80px auto 0;
    text-align: center;
}

.image-gallery__img-holder {
    max-width: 280px;
    display: inline-block;
    vertical-align: top;
    margin-bottom: 20px;
    margin-left: 16px;
    cursor: pointer;
}

.image-gallery .image-gallery__img-holder:nth-child(3n+1) {
    margin-left: 0;
}

.image-gallery__img-holder img {
    width: 100%;
    height: 220px;
    display: block;
}

.myImg {
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
}

.myImg:hover {
    opacity: 0.7;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
}

#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}

.modal-content,
#caption {
    -webkit-animation-name: zoom;
    -webkit-animation-duration: 0.6s;
    animation-name: zoom;
    animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
    from {
        -webkit-transform: scale(0)
    }

    to {
        -webkit-transform: scale(1)
    }
}

@keyframes zoom {
    from {
        transform: scale(0)
    }

    to {
        transform: scale(1)
    }
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}

.close:hover,
.close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

@media only screen and (max-width: 700px) {
    .modal-content {
        width: 100%;
    }
}
        .modal .prev, .modal .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    color: white;
    font-weight: bold;
    font-size: 36px;
    user-select: none;
    transition: 0.3s;
    z-index: 10;
}

.modal .prev {
    left: 0;
}

.modal .next {
    right: 0;
}

.modal .prev:hover, .modal .next:hover {
    background-color: rgba(0, 0, 0, 0.3);
}