style.css

html,body{
    background-color: #f6f6f6;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

#content{
    margin: 0 auto;
    max-width: 80vw;
}

/* POST */

.post{
    display: flex;
    margin: 1rem;
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 1rem;
    box-shadow: 0px 1px 10px rgba(0, 0, 0, 0.1);
}


/* REACTION */

.reaction_block{
    display: flex;
    flex-direction: column;
    
    width: 6rem;
    padding-top: 1rem;
    border-right: 2px solid #bbb;
}
.reaction_block input{
    margin: 0rem auto;
    font-weight: 500;
    color: #999;
    background-color: transparent;
    border: none;
    cursor: pointer;
}
.reaction_block input:hover{
    color: red;
}
.reaction{
    margin: 0.5rem auto;
    font-weight: 500;
    color: #999;
}


/* POST CONTENT */

.post_content{
    width: 100rem;
    margin: 0 1rem;
}
.tag{
    display: inline;
    background-color: #eee;
    color: #999;
    font-weight: bolder;
    margin-inline-end: 1em;
    padding: 0.2em 1.2em;
    border-radius: 1em;
}
.tags{
    height: 3rem;
    margin-top: 2rem;
}
.comments{
    border-top: 2px solid #ddd;
}
.comment{
    margin: 1rem 0;
}
.comment b{
    margin: 0;
    padding: 0;
}
.comment p{
    margin: 0;
    padding: 0;
    border-left: 2px solid #ddd;
    margin-top: 0.6rem;
    padding-left: 0.6rem;
}