.article-list {
    font-size: 0;
}

.demo-list-item {
    display: inline-block;
    text-align: center;
    margin: 15px 5px;
}

.demo-list-item img {
    height: 160px;
}

.demo-list-content {
    font-size: 14px;
    padding: 1em 0;
}