.collapsible {
            background-color: #3b5998; /* Updated to a blue color */
            color: white;
            cursor: pointer;
            padding: 10px;
            width: 100%;
            border: none;
            text-align: left;
            outline: none;
            font-size: 18px;
            margin-top: 20px;
            border-radius: 5px; /* Slightly rounded corners */
        }

        .active, .collapsible:hover {
            background-color: #2d4373; /* Darker blue on hover */
        }

        .content {
            padding: 0 18px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out;
            background-color: #f9f9f9; /* Light background for the content */
            border-radius: 5px; /* Matches the rounded corners */
        }

        .content p {
            margin: 20px 0;
        }

        .btn {
            background-color: #3b5998; /* Blue for buttons as well */
            color: #fff;
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            text-decoration: none;
        }

        .btn:hover {
            background-color: #2d4373; /* Button hover effect in darker blue */
        }