.table {
  background-color: #292e38;
  border-radius: 10px !important;
  width: 100% !important;
}
 
.table-responsive.brands-table .table {
    margin-bottom: 1rem;
}
hem böyle

.table {
  background-color: #292e38;
  border-radius: 10px;
  border-top-right-radius: 10px;   
  border-top-left-radius: 10px;   
  width: 100% !important;
}
 
.table-responsive.brands-table .table {
    margin-bottom: 1rem;
}
hem de böyle denedim ancak yine olmadı.