.jumbotron {
  background-color: rgba(0, 0, 0, 0);
  color:#fff;
  font-size: 1.5rem;
}

.jumbotron p {
  max-width: 700px;
}

.display-3 {
  font-size: 3.5rem;
  color:#fff;
}

#sp-prizyv-k-dejstviyu {
  background: #000 url("/images/Index_fon2.jpg") no-repeat 50% 50%;
  background-size:cover;
}

.tel {
  min-width: 300px;
  font-size: 1.5rem;
  float: left;
position: relative;
}
.custom.tel {
    display: inline-block;
    padding: 0 15px;
    line-height: 60px;
    font-size: 24px;
    margin: 0;
}

@media(max-width: 991px) {
    .tel {display:none;}
}