@media (min-width:1025px) {
  
   .cent{
        text-align: center!important;
    }
  
    .ip{
        padding-top: 3%!important;
        padding-bottom: 3%!important;
    }
    input#usr {
    width: 60%;
    text-align: center;
}
    .form-control{
        margin-left: 20%!important
    }
    .jumbotron {
    width: 40%;
    margin-left: 30%!important;
}
}