.project-description
{
    font-size: 100%;
    overflow: hidden;
    max-height: 30px;

    -ms-transition: 0.7s ease-in-out;
    -webkit-transition: 0.7s ease-in-out;
    -moz-transition: 0.7s ease-in-out;
    -o-transition: 0.7s ease-in-out;
    transition: 0.7s ease-in-out;
}

.card:hover .project-description
{
    max-height: 999px;
}