.blue-filter:after {
    background: rgba(46, 114, 185, 0.45);
    background: linear-gradient(135deg, rgb(145, 148, 253) 0%, rgba(46, 114, 185, 0.45) 100%);;
    background: -moz-linear-gradient(135deg, rgb(145, 148, 253) 0%, rgba(46, 114, 185, 0.45) 100%);;
    background: -webkit-linear-gradient(135deg, rgb(145, 148, 253) 0%, rgba(46, 114, 185, 0.45) 100%);;
  }

  .card .card-title:last-child {
    margin-bottom: 0.75rem;
  }

  .title {
    text-align: center !important;
    padding: 10px;
  }

  .card-header .fa {
    font-size: 4em;
  }

  .section {
    background-repeat: no-repeat;
  }

  .section-doing {
    background-image: url(./assets/img/desk.jpg);
    background-size: cover;
  }

  @media only screen and (max-width: 576px) {
    .index-page .brand h1 {
      font-size: 2.5rem;
    }
  }