.article{
    float: left;
    width: 700px;
}


.p-article{
    text-align: justify;
}

small .date{
    display: block;
    margin-top: 1rem;
    margin-bottom: 2rem;
}


.banner{
    margin-bottom: 1rem;
    display: block;
}

.demo-video{
    width: 700px;
    margin: auto 0 auto 0;
}