.portfolio-img {
    position: relative;
    overflow: hidden;
}

.portfolio-hover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background-color: rgba(0, 2, 72, 0.5); */
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    /* visibility: hidden;
    opacity: 0; */
    -webkit-transition: all .3s;
    -o-transition: all .3s;
    transition: all .3s;
}

.hover-content {
    -webkit-transform: translateY(-40px);
    -ms-transform: translateY(-40px);
    transform: translateY(-40px);
    -webkit-transition: all .4s;
    -o-transition: all .4s;
    transition: all .4s;
}

.fa-plus {
    color: #fff;
    font-size: 34px
}