.principal p{
    margin:15px;
    text-align:justify;
}

.principal .imgD{
    width:200px;
    float:right;
    margin-left:10px;
}

.principal .imgP{
    border:2px solid #DDD;
    padding:10px;
    margin:10px;
    background:#f5f5f5;
}

.principal .imgC{
    padding:10px;
    background:#FFF;
}
.principal .imgP img{
    width:120px;
    height:90px;
    padding:3px;
    border:1px solid #CCC;
    margin:3px 0 3px 10px;
}

.principal h2{
    font-size:120%;
    margin-top:20px;
}