小库网

<style>

#main {

    display: flex;

    flex-direction:initial;

}

#main div {

    width: 40px;

    height: 40px;

}

</style>

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<div id="main">

    <div style="background-color:coral;">A</div>

    <div style="background-color:lightblue;">B</div>

    <div style="background-color:khaki;">C</div>

    <div style="background-color:pink;">D</div>

    <div style="background-color:lightgrey;">E</div>

    <div style="background-color:lightgreen;">F</div>

</div>

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