body {
            font-family: sans-serif;
            background: #fff !important;
        }

        .page-about {
            background: #e7ebf0 !important;
        }

        .items-container-01 {
            margin: 100px 0;
            padding: 60px 40px;
            background-color: #fff;
            border-radius: 15px;
        }

        .items-container-01 form {
            display: flex;
            /* 横並びにする */
            align-items: center;
            justify-content: center;
            max-width: 100%;
        }

        .items-container-01 input {
            margin-right: 5px;
            padding: 10px;
            font-size: 30px;
            border-radius: 5px;
            min-width: 0;
        }

        .items-container-01 button {
            padding: 10px 12px;
            font-size: 30px;
            color: #fff;
            background-color: #222c88;
            border-radius: 5px;
            flex-shrink: 0;
        }

        .items-container-01 input,
        .items-container-01 button {
            box-sizing: border-box;
            /* paddingを含めた高さ計算 */
            height: 60px;
            /* 明示的な高さを指定 */
            padding: 0 15px;
            /* 上下0に設定 */
            line-height: normal;
            /* 行の高さを標準に */
            vertical-align: middle;
            /* インライン要素の場合に必要 */
        }

        .result {
            margin-top: 40px;
            padding: 15px;
            font-size: 20px;
            border-top: 1px solid #ccc;
            border-bottom: 1px solid #ccc;
        }

        .item {
            margin-bottom: 5px;
            font-size: 20px;
        }

        .items-container-01 {
            max-width: 960px;
            width: 90%;
            margin-left: auto;
            margin-right: auto;
        }

        .common-content-header-02 .text-items {
            z-index: 2;
        }

        .common-content-header-02 picture::before {
            position: absolute;
            top: 0;
            left: 0;
            display: block;
            content: "";
            width: 100%;
            height: 100%;
            background: #000;
            opacity: .1;
            z-index: 1;
        }

        .pickup-bn {
            width: 50%;
            margin: 0 auto;
            text-align: center;
        }

        .water_data {
            font-size: 16px;
        }

        .hardness_title {
            padding: 10px 15px;
            width: 100%;
            font-size: 20px;
            color: #fff;
            background-color: #3f6eb4;
            border-radius: 10px;
        }

        .hardness_table {
            width: 100%;
            font-size: 16px;
        }

        .hardness_table tr {
            border: 1px solid #ccc;
        }

        .hardness_table tr th {
            background-color: #e7ebf0;
        }

        .hardness_table tr th,
        .hardness_table tr td {
            padding: 10px 15px;
            text-align: center;
        }

        .hardness_table tr th:first-child,
        .hardness_table tr td:first-child {
            border-right: 1px solid #ccc;
        }

        .hardness_link {
            font-size: 16px;
            color: #3f6eb4;
            text-decoration: underline;
        }

        .hardness_link:hover {
            opacity: .8;
            transition: .3s;
        }

        .topics_txt {
            position: relative;
            padding-left: 1em;
            color: #E5234F;
        }

        .topics_txt::before {
            display: inline-block;
            position: absolute;
            top: 0;
            left: 0;
            content: '※';
            font-size: 1em;
        }

        @media (max-width:768px) {

            .items-container-01 input,
            .items-container-01 button {
                font-size: 20px;
            }

            .items-container-01 input,
            .items-container-01 button {
                height: 40px;
            }

            .result,
            .item,
            .hardness_title {
                font-size: 16px;
            }

            .pickup-bn {
                width: 90%;
            }

            .water_data {
                font-size: 14px;
            }

            .hardness_link {
                font-size: 14px;
            }

        }

        @media (max-width:480px) {

            .items-container-01 {
                padding: 60px 20px;
            }

            .items-container-01 input,
            .items-container-01 button {
                font-size: 16px;
            }

        }