Changing the opacity of posts

Simples, apenas procure pelo seguinte código:
    #entry{
    margin:7px;
    float:left;
    font-size:10px;
    line-height:13px;
    text-transform:normal;
    width:246px;
    padding:14px;
    background:#fff;
    border:1px solid #eee;
    }


Tendo o código, é só acrescenter: opacity:0.1px (entre 0.0 e 1.0)
O seu código ficará assim (o código está mais chegado para a frente):
    #entry{
    margin:7px;
    float:left;
    font-size:10px;
    line-height:13px;
    text-transform:normal;
                    opacity:0.8;
    width:246px;
    padding:14px;
    background:#fff;
    border:1px solid #eee;
    }



x ----------------------------------------------------------------------------------------------------------------------------------- x


Simple, just search for the following code:
    #entry{
    margin:7px;
    float:left;
    font-size:10px;
    line-height:13px;
    text-transform:normal;
    width:246px;
    padding:14px;
    background:#fff;
    border:1px solid #eee;
    }


Having the code, just add: opacity:0.1px (between 0.0 e 1.0)
Your code will look like this (the code is closer to the front):
    #entry{
    margin:7px;
    float:left;
    font-size:10px;
    line-height:13px;
    text-transform:normal;
                    opacity:0.8;
    width:246px;
    padding:14px;
    background:#fff;
    border:1px solid #eee;
    }