#event_div {
  margin:  10px 10px 10px 10px;
  text-align: center;
}

#event_table {
  table-layout: fixed;
  max-width:  510px;
  text-align: left;
  margin-left:  auto;
  margin-right: auto;
}

#event_table th td {
  margin: 2px 2px 2px 2px;
}

#header_field {
  text-align: center;
  background-color: #D1D1D1;
}

.title_column {
  width:  15%;
}
.time_column {
  width:  33%;
}
.class_column {
  width:  10%;
}
.real_value_column {
  width:  42%;
}

.row_title_field {
  font-weight: bold;
}
.time_field {
}
.class_field {
  text-align: center;
}
.real_value_field {
}