@media only screen and (max-width: 600px) {

}

/* Small devices (portrait tablets and large phones, 600px and up) */
@media only screen and (min-width: 600px) {
       #Review
{
   	    position: absolute;
        background-color: #dadada;
        z-index: 300000;
        bottom: 65%;
        left: 42%;
}
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px && max-width:600px) {
      #Review
{
   	    position: absolute;
        background-color: #dadada;
        z-index: 300000;
        bottom: 14%;
        left: 42%;
}
} 

/* Large devices (laptops/desktops, 992px and up) */
@media only screen and (min-width: 992px) {
    #Review
{
position:absolute;
background-color:#dadada;
z-index:300000;
bottom:28%;
left:45%;
text-align:center;
}

}