.wcontainer {
    position: relative;
  }
  
.wimage {
    display: block;
    width: 100%;
    height: auto;
}
  
.woverlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #212121;
    overflow: hidden;
    width: 100%;
    height: 0;
    transition: .5s ease;
}

.wcontainer:hover .woverlay {
    height: 100%;
    cursor: pointer;
}

.wtext {
    color: white;
    font-size: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: center;
    width: 80%;
}

.wnew {
    position: absolute;
    bottom: 0;
    margin-left: auto;
    margin-right: auto;
    background-color: #212121;
    overflow: hidden;
    width: 96%;
    height: 15%;
    transition: .5s ease;
}