body {
    font-family: Arial;
    margin: 0;
    background: #f4f4f4;
}

header {
    background: #333;
    color: white;
    padding: 15px;
    text-align: center;
}

input, textarea {
    width: 90%;
    margin: 10px;
    padding: 10px;
}

button {
    padding: 10px;
    background: #28a745;
    color: white;
    border: none;
    cursor: pointer;
}

#formulario, #posts {
    background: white;
    margin: 20px;
    padding: 20px;
    border-radius: 10px;
}

.post {
    border-bottom: 1px solid #ccc;
    margin-bottom: 10px;
}