我需要在CSS多列布局（具有contenteditable属性）中找到第二列的起始位置。有办法吗？我需要它来定义用户从一列转到第二列并返回的时刻。
div {
columns: 300px auto;
}
<div contenteditable>
Bonytail chub. Pelican gulper Redfish; Norwegian Atlantic salmon pejerrey popeye catafula temperate perch ridgehead, pleco. Port Jackson shark Red salmon lenok stonecat salmon shark tommy ruff lookdown catfish. Celebes rainbowfish monkfish alewife wasp
fish, gouramie pilot fish garibaldi, salmon salamanderfish sand stargazer. Bombay duck, mustache triggerfish stickleback firefish--duckbill eel wormfish threadtail triplefin blenny Moorish idol long-whiskered catfish. Nase Hammerjaw California halibut
capelin anemonefish snakehead pickerel surfperch monkeyface prickleback. Medaka giant danio requiem shark airbreathing catfish glass catfish pilot fish gray eel-catfish weatherfish; vendace bat ray.
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