body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
        }
        header {
            background-color: #1DA1F2;
            color: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px;
        }
        header nav a {
            color: white;
            text-decoration: none;
            margin-right: 10px;
        }
        header nav a:hover {
            text-decoration: underline;
        }
        header input {
            border: 1px solid white;
            border-radius: 20px;
            padding: 5px 10px;
        }
        header button {
            background-color: white;
            color: #1DA1F2;
            border: none;
            border-radius: 20px;
            padding: 5px 15px;
            cursor: pointer;
        }
        main {
            display: flex;
            justify-content: space-around;
            padding: 20px;
        }
        aside {
            width: 25%;
        }
        aside ul {
            list-style-type: none;
            padding: 0;
        }
        section {
            width: 50%;
        }
        form {
            display: flex;
            flex-direction: column;
        }
        textarea {
            resize: none;
            padding: 10px;
        }
        button[type="submit"] {
            background-color: #1DA1F2;
            color: white;
            border: none;
            border-radius: 20px;
            padding: 5px 15px;
            cursor: pointer;
            align-self: flex-end;
            margin-top: 10px;
        }
        li {
            border-bottom: 1px solid #ccc;
            padding: 10px 0;
        }
        h3 {
            margin: 0;
        }
        footer {
            background-color: #1DA1F2;
            color: white;
            text-align: center;
            padding: 10px;
            margin-top: 20px;
        }