28 lines
584 B
HTML
28 lines
584 B
HTML
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<style type="text/css">
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optgroup {overflow-x: hidden;}
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</style>
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<select>
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<optgroup label="optgroup">
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<option>1</option>
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<option>2</option>
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<option>3</option>
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<option>4</option>
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<option>5</option>
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<option>6</option>
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<option>7</option>
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<option>8</option>
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<option>9</option>
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<option>10</option>
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<option>11</option>
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<option>12</option>
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<option>13</option>
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<option>14</option>
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<option>15</option>
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<option>16</option>
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<option>17</option>
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<option>18</option>
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<option>19</option>
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<option>20</option>
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</optgroup>
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</select>
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