      height: 50px;
                margin-top: 50px;
            }
        </style>
    </head>
    <body>
        <p>Test passes if the layout of the boxes within the black box matches either the left or the right reference boxes.</p>
        <div class="container">
            <div class="target1"></div>
            <div class="target2"></div>
            <div class="target3"></div>
            <div class="target4"></div>
            <div class="target5"></div>
            <div class="target6"></div>
   