<p class="tekli">W3TR</p>
<p class="ikili">W3TR</p>
<p class="uclu">W3TR</p>
<p class="dortlu">W3TR</p>

p.tekli {
    border-style: solid;
    border-color: #000000;
}

p.ikili {
    border-style: solid;
    border-color: #33FF66 #CC0099;
}

p.uclu {
    border-style: solid;
    border-color: #CC9933 #999933 #669933;
}

p.dortlu {
    border-style: solid;
    border-color: #CC66CC #9966CC #6666CC #3366CC;
}