web_AI-3/css/stylesheet.css

body {
    font-family:sans-serif;
    width:50%;
    margin-left:auto;
    margin-right:auto;
}

p {
    font-size:medium;
    font-family:sans-serif;
    font-weight:normal;
}

/* navigation */
ul {
    list-style-type:none;
    overflow: hidden;
    background-color:none;
    image-orientation: left;
}

li {
    float: right;
}

li a {
    display: block;
    color: grey;
    text-align: center;
    padding: 18px 16px;
    text-decoration: none;
}

li a:hover {
    background-color: #111;
}

li {
    border-right: 1px solid #bbb;
    border-left: 1px solid #bbb;
}
/* navigaton end */

/* comment section */
.post-box{
    width: 815px;
    padding: 20px;
    margin-bottom: 4px;
    background-color: #fff;
    border-radius: 4px;
    position: relative;

}