body
    {
    background-color:#000000;
    color:#ffffff;
    font:1.2em sans-serif;
    line-height:1.4em;
    margin:auto;
    text-align:justify;
    width:823px;
    }
nav
    {
    a
        {
        color:cyan;
        font:1.15em sans-serif;
        margin-right:20px;
        text-decoration:none;
            &::before
                {
                content:attr(data-item);
                transition:all 0.7s ease-in-out;
                }
            &:hover
                {
                &::before
                    {
                    color:red;
                    content:attr(data-item);
                    transition:all 0.7s ease-in-out;
                    }
                }
        }
    }
.line { background-color: #FFFFFF; display: inline-block; height: 1px; vertical-align: middle; width: 100%; }