Ovaluation tracker
body { text-align: center; padding: 20px; }
#ovulationCalculator { max-width: 500px; margin: 0 auto; padding: 20px; border: 2px solid #333; }
label, select, input { display: block; margin: 10px auto; font-size: 16px; }
button { padding: 10px 15px; font-size: 16px; cursor: pointer; margin-top: 10px; }
#result { margin-top: 15px; font-weight: bold; }
Ovulation Tracker