.one-rm-calculator{max-width:400px;margin:20px auto;padding:20px;border-radius:8px;box-shadow:0 4px 8px rgb(0 0 0 / .2);font-family:Arial,sans-serif}.one-rm-calculator h2{text-align:center;font-size:24px;color:#333}.one-rm-calculator label{display:block;margin-top:10px;color:#666}.one-rm-calculator input{width:100%;padding:10px;margin-top:5px;border-radius:4px;border:1px solid #ddd;font-size:16px}.one-rm-calculator button{width:100%;padding:10px;margin-top:15px;background-color:#4CAF50;border:none;border-radius:4px;color:#fff;font-size:18px;cursor:pointer;transition:background-color 0.3s ease}.one-rm-calculator button:hover{background-color:#45a049}#result{margin-top:20px;font-size:20px;text-align:center;color:#333}