.portfolio-filter {
    text-align: center;
    margin-bottom: 10px;
}

.portfolio-filter button {
    background: #f5f5f5;
    border: 1px solid #ddd;

    margin: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: all .3s ease;
}

.portfolio-filter button.active,
.portfolio-filter button:hover {
    background: #111;
    color: #fff;
    border-color: #111;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(300px,1fr));
    gap: 30px;
}

.portfolio-item {
    transition: all .4s ease;
}

.portfolio-item img {
    width: 100%;
    display: block;
}

.portfolio-item.hide {
    display: none;
}