.grafika-obal {
        

            position: relative;
    box-sizing: border-box;
    max-width: 720px;
    margin: 0;
    border-radius: 8px;
    background: #7bb3e6;
    padding: 20px 5px;


       }



        .grafika-obal table, .article .content .grafika-obal table {
            background-color: transparent; width: auto !important;
            border-collapse: collapse;
            table-layout: fixed;
            margin: 20px auto 30px auto;
            max-width: 480px;
        }
        .grafika-obal table#main-puzzle td.pre-filled {
            background-color: #E6E7E8;
        }

        .grafika-obal td {
            position: relative;
        }

        .grafika-obal td input {
            width: 100%;
            height: 100%;
            text-align: center;
            border: 0;
            background: transparent;
            box-sizing: border-box;
        }

        .grafika-obal td input:focus-visible, .grafika-obal td input.selected {
            border: 2px solid #E68B98;
            outline: none;
        }

        /* disable input arrows */
        .grafika-obal td input::-webkit-outer-spin-button, .grafika-obal td input::-webkit-inner-spin-button {
            -webkit-appearance: none;
            margin: 0;
        }


        .grafika-obal .users-number {
            position: absolute;
            right: 1px;
            top: 1px;
            font-size: 10px;
            line-height: 10px;
            color: red;
            padding: 2px;
            font-weight: bold;
        }


        #main-puzzle td {
            width: 40px;
            height: 40px;
            padding: 0;
            color: #000;
            text-align: center;
            font-size: 17px; vertical-align: middle; border: solid 1px #333;
            background-color: white; background-clip: padding-box;
        }
       
        .c1,
        .c4,
        .c7 {
            border-left-width: 2px;
        }
        .c9 {
            border-right-width: 2px;
        }
        .r1,
        .r4,
        .r7 {
            border-top-width: 2px;
        }
        .r9 {
            border-bottom-width: 2px;
        }
        #main-puzzle .c1,
        #main-puzzle .c4,
        #main-puzzle .c7 {
            border-left-width: 3px;
        }
        #main-puzzle .c9 {
            border-right-width: 3px;
        }
        #main-puzzle .r1,
        #main-puzzle .r4,
        #main-puzzle .r7 {
            border-top-width: 3px;
        }
        #main-puzzle .r9 {
            border-bottom-width: 3px;
        }

        #main-puzzle .conflict-unit {
            background-color: #fcc !important;
        }

        .sudoku-bottom-menu {
            display: flex;
            justify-content: space-between;
            margin: 0 auto;
            padding: 20px 10px 20px 10px;
            background: #BDD2ED;
            border-radius: 0 0 8px 8px ;
        }

        .grafika-obal button {
            padding: 5px 12px;
            font-size: 15px;
            margin: 1px 3px;
            background: #ffffff;
            border: 1px solid #92B4E1;
            box-shadow: 2px 2px 1px rgba(255,255,255,0.22);
            display: inline-block;
            color: #07171F;
            font-weight: 700;
            text-decoration: none;
            border-radius: 4px;
            cursor: pointer;
            line-height: 1.3;
        }

        .grafika-obal button.selected, .grafika-obal button:hover {
            background: #2F6AC2;
            color: #ffffff;;
        }

        .grafika-obal button#solve-btn {
            background-color: transparent;
            color: #D10F2B;
            border-color: transparent;
            box-shadow: none;
            text-decoration: underline;
        }

        .sudoku-number-menu {
            margin: 0 auto;
            display: flex;
            justify-content: center;
            padding: 20px 0;
            background: #BDD2ED;
            border-radius: 8px 8px 0 0;
        }  
        .grafika-obal .sudoku-number-menu button {
            font-size: 20px;
            font-weight: normal;
            padding: 0;
            width: 46px;
            height: 46px;
            border-radius: 40px;
            line-height: 46px;
            border-color: #b7b7b7;
        }

        .conflict-checker-form {
            text-align: center;
            padding: 20px 0 0 0;
        }
        .conflict-checker-form input {
            -webkit-appearance: checkbox;
            -moz-appearance: checkbox;
            appearance: checkbox;
            vertical-align: middle;
        }

        @media screen and (max-width: 480px) {
            .grafika-obal table, .article .content .grafika-obal table {
               margin: 0 auto;
               width: calc(100% - 79px) !important;
            }

            #main-puzzle td {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }

            .grafika-obal .sudoku-number-menu button {
                font-size: 16px;
                width: 30px;
                height: 30px;
                line-height: 30px;
                margin: 2px 0;
            }
            .sudoku-number-menu {
                margin: 10px 0 0 auto;
                display: flex;
                justify-content: center;
                padding: 10px 3px 0 3px;
                flex-wrap: wrap;
                width: 50px;
                box-sizing: border-box;
            }

            .sudoku-wr {
                display: flex; align-items: center;
            }

            .sudoku-bottom-menu {
                padding: 10px;
            }
        }