*{box-sizing:border-box;margin:0;padding:0;font-family:Segoe UI,sans-serif}body{background-color:#f0f2f5;color:#333}.container{max-width:900px;margin:0 auto;padding:20px}header{text-align:center;margin-bottom:40px;padding:20px;background:#fff;border-radius:10px;box-shadow:0 2px 5px #0000001a}header h1{color:#2e7d32}.conteudo-principal{display:grid;grid-template-columns:1fr 1fr;gap:20px}.criar-post{background:#fff;padding:20px;border-radius:10px;height:fit-content;box-shadow:0 2px 5px #0000001a}input,textarea{width:100%;padding:10px;margin-bottom:10px;border:1px solid #ddd;border-radius:5px}textarea{height:100px;resize:vertical}button{width:100%;padding:10px;background-color:#2e7d32;color:#fff;border:none;border-radius:5px;cursor:pointer;font-weight:700}button:hover{background-color:#1b5e20}.lista-posts{display:flex;flex-direction:column;gap:15px}.cartao-post{background:#fff;padding:15px;border-radius:8px;border-left:5px solid #2e7d32;box-shadow:0 2px 4px #0000000d}.aviso{color:#666;font-style:italic}@media (max-width: 600px){.conteudo-principal{grid-template-columns:1fr}}