.modal-content{border-radius: 0; padding: 15px}

@media (min-width: 576px){

   .modal-dialog {
       max-width: 700px;

   }

   .modal-dialog-kucuk {
       max-width: 500px;

   }

 }

 @media (min-width: 992px){
   .modal-lg {
       max-width: 950px;
   }
 }