.image-content {
    position: absolute;
    left: 50%;
    top:40%;
    z-index: -1;
    transform: translate(-50%,-50%);
}

.image-content button{
    text-align: center;
    width: 100%;
    height: 40px;
    background-color: #666;
    color:white;
    border-radius: 5px;
    border: 0px;
    margin: 0px;
    margin-top:5px;
}

.image-content button:hover {
   box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
   cursor: pointer;
}