.gallery img {
    width: 250px;
    cursor: pointer;
    margin: 10px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.8);
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    top: 15%;
    max-width: 1000px;
}
.close, .prev, .next {
    position: absolute; 
    top: 50%; 
    width: auto; 
    padding: 16px; 
    color: #f1f1f1; 
    font-weight: bold; 
    font-size: 24px; 
    cursor: pointer; 
    user-select: none; 
}

.prev {
    left: 0;
}

.next {
    right: 0;
}

.close {
    position: absolute;
    top: 10rem;
    right: 25px;
    color: #fff;
    font-size: 50px;
    font-weight: bold;
    opacity: 0.75;
}

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