.overlay-color{
    
    /* Default
    background-color: #0097f4;
    opacity: .8 */

    /* Custom color */
    background-color: black;
    opacity: .7;



}

.btn-color{
background-color: black;
border-color: black;
}

.btn-color:hover{

    background-color: black;
    opacity: .8;
}