* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #720004;
            color: #fff;
            font-family: serif;
            padding-bottom: 60px;
        }

        a {
            color: #000;
            text-decoration: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: auto;
        }

        /* HEADER */
        .head {
            width: 100%;
            padding: 20px 0;
            background: #c6c6c6;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .logo img {
            width: 100%;
            max-width: 280px;
            object-fit: contain;
        }

        /* MENU */
        .menu {
            width: 100%;
            text-align: center;
            background: #720004;
        }

        .menu a {
            display: inline-block;
            padding: 12px 20px;
            color: #fff;
            font-size: 18px;
        }

        /* CONTENT */
        .container {
            width: 70%;
            margin: auto;
        }

        @media (max-width: 1000px) {
            .container {
                width: 100%;
                padding: 0 10px;
            }
        }

        .content {
            background: #c6c6c6;
            border: 1px solid #c6c6c6;
            padding: 15px;
            color: #000;
            border-radius: 4px;
        }

        h1, h2, h3, h4 {
            text-align: center;
            margin: 25px 0;
            color: #000;
        }

        p {
            font-size: 16px;
            color: #000;
            margin: 5px 0;
        }

        /* IFRAME BOX */
        .frame,
        .frame-result {
            width: 100%;
            margin: 20px auto;
            background: #fff;
            border-radius: 10px;
            overflow: hidden;
        }

        .frame {
            max-width: 770px;
            border: 2px solid #ff5252;
        }

        .frame-result {
            max-width: 900px;
            border: 1px solid #bbb;
            background: #fafafa;
        }

        .floating-top,
        .floating-bottom {
            position: fixed;
            width: 100%;
            left: 50%;
            transform: translateX(-50%);
            width: 40%;
            text-align: center;
            z-index: 9999;
        }

        .floating-top { top: 0; }
        .floating-bottom { bottom: 0; }

        @media (max-width: 768px) {
            .floating-top,
            .floating-bottom {
                width: 100%;
                left: 0;
                transform: none;
            }
        }