html,body{
    margin:0;
    padding:0;
}
.index-nav{
    display: flex;
    justify-content: center;
}

.user-list{
    padding: 2em 5em 0 5em;
}

.index-article{
    max-width: 20em;
    
    float: left;
    margin: 2em 0.5em 0 0.5em ;
}

.article-title-h1::before{
    content: '# ';
}