78m威九国际

.navigation { background-color: #ffffff; box-shadow: 0 2px 4px rgba(0,0,0,0.1); padding: 1rem; position: fixed; width: 100%; top: 0; z-index: 1000; }

.logo { font-size: 1.5rem; font-weight: bold; color: #333; text-decoration: none; margin-left: 2rem; }

.menu { float: right; margin-right: 2rem; }

.menu a { color: #333; text-decoration: none; margin-left: 1.5rem; }