font-size: 12pt

.wpil_styles td, .wpil_styles p, .wpil_styles td a, .wpil_styles .row-title, .wpil_styles .form-table, .wpil_styles .form-table th, .wpil_styles .form-table td, .wpil_styles .form-table td p, .wpil_styles .form-table textarea, .wpil_styles li, .wpil_styles .form-table button {
    font-size: 12pt !important;
    line-height: 1.6em !important;
}

The font on the settings screen was strange, so I checked it and found that it looked like this.

font-size: 12px !important;

Changing it to this made the design look better.