.bg-site{
                    background:rgb(128, 128, 128);
                }
                .text-btn{
                    text-decoration: none;
                     color: white
                }
                  .text-btn:hover{
                    text-decoration: none;
                     color: white
                }
                 #btn-nohover:hover{
                    text-decoration: none;
                     color: white
                }
                .bg-dradient-green{  
                    background: #474c52;
                }

                #nav-item{  
                    color: white;
                }
                .shadow-theme{
                    box-shadow: 0px 5px 8px rgba(0,0,0,0.5);
                }
                .bg-silver{
                    background: rgba(213, 216, 220  ,0.5); 
                }
                .intro-office{
                    /*padding: 40px 40px 40px 40px;*/
                    height: auto;
                }
                .box-intro{
                    background: white; 
                    border-radius: 5px;
                    width:60%;
                    padding: 0;
                    height: auto;
                    overflow: hidden;
                    margin: 0 auto
                }
                .contactNous{
                    padding: 30px;
                     background: white;
                     border-radius: 8px;
                     overflow: hidden;
                }