.post-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-gap: 2rem;
}

.post-item {
    border: 0.1rem solid #ccc;
    padding: 1rem;
    background-color: #f9f9f9;
}

.post-thumbnail {
    position: relative;
    overflow: hidden;
    min-height: 15rem;
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 1.2rem;
}

.post-content {
    margin-top: 1rem;
}

.post-content h3 {
    margin-top: 0;
}

.read-more {
    display: inline-block;
    margin-top: 1rem;
    background-color: #1dbfc1;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-decoration: none;
    text-align: center;
    font-weight: bold;
}

#hub-filter-form {
    margin-bottom: 4rem;
}