.celdaprod {
    width: 280px;
    height: 300px;

    float: left;
    overflow: hidden;
    margin-left: 10px;
    text-align: center;
}
.separa {
    width: 100%;
    height: 10px;
    float: left;
}
.franjatitle {
    width: 100%;
    height: 100px;
    float: left;
    line-height: 1.3em;
    overflow: hidden;
   
}