#div_content { min-height: 400px; }

.row { margin-bottom: 15px; }

.btn-circle {
    border-radius: 15px;
    font-size: 12px;
    height: 30px;
    line-height: 1.42857;
    padding: 6px 0;
    text-align: center;
    width: 30px;
}

/* History */
.hist_year_title { background: #ddd; font-weight: bold; padding: 10px; font-size: 15px; cursor: pointer; margin-bottom: 10px; }
.hist_year_content { border: 0px solid #eee; margin-bottom: 10px; }
.hist_reeks_title { background: #eee; font-weight: bold; cursor: pointer; padding: 5px; margin-bottom: 10px; padding-left: 25px; }
.hist_reeks_content { border: 0px solid #eee; margin-bottom: 10px; }
.hist_data_title { background: #f5f5f5; font-weight: bold; cursor: pointer; padding: 5px; margin-bottom: 10px; padding-left: 40px; }