*{font-family:Roboto,sans-serif;margin:0;padding:0;box-sizing:border-box}html,body{font-family:Roboto,sans-serif;background-color:var(--background-color);min-height:100vh}:root{--primary-color: #2c3e50;--secondary-color: #3498db;--text-color: #fffbec;--background-color: #7A7A7A;--shadow: 0 2px 10px rgba(0, 0, 0, .1);--transition: all .3s ease;--border-color: #efefef}app-root{background-color:var(--background-color);min-height:100vh;display:block}