p #copa{
    font-family: 'Arial Rounded MT';
    font-size:50px;
    color:#000000;

}
.portfolio .thumbnail {
    position: relative;
}

.portfolio .thumbnail:hover {
    cursor: pointer;
}

.portfolio .caption {
    bottom: 0;
    position: absolute;
}

.portfolio .btn {
    opacity: 0.75;
}