#nav-gallery a {
  border-bottom: 2px solid #fff;
  padding-bottom: 5px;
}

.gallery {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
    align-content: center;
    justify-content: center;
    display: flex;
    display: -weblit-flex;
    flex-wrap: wrap;
    margin-top: 2em;
    margin-bottom: 4em;
}

.photo {
    align-self: auto;
    width: 20em;
    height: 20em;
    object-fit: cover;
    background-position: center;
    background-repeat: no-repeat;
    margin-bottom: 1em;
    padding-left: 10px;
    padding-right: 10px;
    cursor: pointer;
}

.fill {
    width: 20em;
    align-self: auto;
    padding-left: 10px;
    padding-right: 10px;
}