-<table border class="table table-bordered table-striped">
-<thead><tr><th>ID<th>Problem<th>Date<th>Format<th>Size<th>User<th>Result</thead>
+<table class="table table-striped">
+<thead><tr><th>ID<th class="problem">Problem<th class="contest">Contest<th>Date<th>Source<th class="owner">User<th>Result</thead>