main {
  --table-width: 100%; /* Or any value, this will change dinamically */

  background-image: url("../images/bg.jpg");
  background-repeat: no-repeat;
}

.jumbotron {
  background-color: #eeeeee60;
}

.bg-light {
  background-color: #eeeeee60 !important;
}

tbody {
  display: block;
  max-height: 300px;
  overflow-y: auto;
}

thead,
tbody tr {
  display: table;
  width: var(--table-width);
  table-layout: fixed;
}