*{margin:0;padding:0;box-sizing:border-box}body{font-family:Times New Roman,serif;line-height:1.6;color:#333}.certificate-container{position:relative;width:1200px;height:900px;margin:0 auto;background-size:cover;background-position:50%;background-repeat:no-repeat}.certificate-header{position:absolute;top:80px;left:50%;transform:translateX(-50%);text-align:center;width:100%}.certificate-title{font-size:2.5rem;font-weight:700;color:#2c3e50;margin-bottom:10px;text-shadow:1px 1px 2px rgba(0,0,0,.3)}.certificate-body{position:absolute;top:200px;left:50%;transform:translateX(-50%);text-align:center;width:100%}.participant-name{font-size:2.2rem;color:#1a365d;margin:120px 0 0 49px}.course-name,.participant-name{font-weight:700;text-align:left}.course-name{font-size:1.3rem;margin:65px 0 0 40px;color:#2d3748}.cert-code{top:240px}.cert-code,.completion-date{position:absolute;left:49px;font-size:1rem;color:#2d3748}.completion-date{top:640px}.instructors{position:absolute;bottom:80px;left:50%;transform:translateX(-50%);display:flex;justify-content:space-around;width:600px}.instructor{text-align:center;color:#2d3748;font-weight:500}.download-btn{background:#3498db;color:#fff;padding:12px 24px;border:none;border-radius:5px;cursor:pointer;font-size:16px;margin:20px}.download-btn:hover{background:#2980b9}.qr-code{position:absolute;bottom:60px;left:55px;width:100px;height:100px}