@media (max-width: 768px) {
    .waiting{
        -webkit-background-size : cover;
        -moz-background-size : cover;
        -o-background-size : cover;
        background-size : cover;
    
    }
    .earth{
        background:none;
        background-color: rgb(255, 233, 230);
    }
    .doc-left{
        background: url("../gallery1/office.jpg") no-repeat center center fixed;
        -webkit-background-size : cover;
        -moz-background-size : cover;
        -o-background-size : cover;
        background-size : cover;
    }
    
    .header{
        background-position-x: 25%;
    }
    .header-row{

        padding-bottom: auto;
        padding-top: 50px;
        text-align: center;
    }
    .overlay a{
        font-size: xx-large;
    }
/*     .earth{
        background: url(../gallery1/moon1.jpg) no-repeat center center fixed;
        width: 100%;
        height: 500px;
        background-size: cover;
    } */

    /*---------------SUB---------------*/
    .sub .text-sub{
        padding-top :0;
        
    }


    /*---------------footer---------------*/
    .contact .btn{
        width: 100%;
    }



    .contact{

        background: url("../gallery1/4.jpg") ;
/*         -webkit-background-size : cover;
        -moz-background-size : cover;
        -o-background-size : cover;
        background-size : cover; */


    }
}