.mekina-buleva span{
    border-radius: 5px 5px 5px 5px;
    visibility: hidden;
    position: absolute;
    left: 28%;
    margin-top: -300px;
    background: #f1eaea;
    box-shadow: -2px 2px 10px -1px #2f2e2e;
    z-index: 9999;
}
.mekina-buleva:hover span{
    visibility: visible;
}