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Why is the Div container visible?

I'm trying to put 3 divs into 1 div. Based on my code, I'm trying to make Div 3 a container for Div 4-6. However, even though Div 5 and Div 6 have the same code, they overlap. 

<!DOCTYPE html>
<html>

<head>
<style>
    #div1 {
        background-color: blue;
        width: 60%;
        height: 400px;
        text-align: center;
        margin: auto;
    }

    #div2 {
        background-color: red;
        width: 90%;
        height: 300px;
        text-align: center;
        margin: auto;
    }

    #div3 {
        background-color: gray;
        width: 95%;
        height: 200px;
        text-align: center;
        margin: auto;
    }

    #div4 {
        background-color: yellow;
        width: 20%;
        height: 100%;
        text-align: center;
    float:left;
    }

    #div5 {
        background-color: green;
        width: 40%;
        height: 100%;
        text-align: center;
    float:left;
    }

    #div6 {
        background-color: purple;
        width: 40%;
        height: 100%;
        text-align: center;
    float:left;
    }

</style>
</head>

<body>

    <div id="div1">test 1
    <div id="div2">test 2
    <div id="div3">test 3
    <div id="div4">test 4</div>
    <div id="div5">test 5</div>
    <div id="div6">test 6</div>
    </div>
    </div>
    </div>

</body>
</html>

Test 3 and test 6 are shown, but I don’t want to see test 3

My professor checked the code for me and said the problem was with my browser. I really don't know what to do.

I tried using flex, but all the content ran outside the div. I tried changing the float position of div 6 but nothing changed. I tried everything I've ever learned and nothing worked.

P粉539055526P粉539055526447 days ago549

reply all(2)I'll reply

  • P粉982009874

    P粉9820098742023-09-10 00:49:59

    If you're using flex like this, it's pretty easy to fix except having to consider DIV 3's text. Using another wrapper with different flex direction solves this problem. 

    <!DOCTYPE html>
<html>
<head>
<style>
    #div1 {
        background-color: blue;
        width: 60%;
        height: 400px;
        text-align: center;
        margin: auto;
    }

    #div2 {
        background-color: red;
        width: 90%;
        height: 300px;
        text-align: center;
        margin: auto;
    }

    #div3 {
        background-color: gray;
        width: 95%;
        height: 200px;
        text-align: center;
        margin: auto;
        display:flex;
    }

    #div4 {
        background-color: yellow;
        width: 20%;
        height: 100%;
        text-align: center;

    }

    #div5 {
        background-color: green;
        width: 40%;
        height: 100%;
        text-align: center;

    }

    #div6 {
        background-color: purple;
        width: 40%;
        height:100%;
        text-align: center;
    }
</style>
</head>
<body>
<div id="div1">测试 1
<div id="div2">测试 2
<div id="div3">
<div id="div4">测试 4</div>
<div id="div5">测试 5</div>
<div id="div6">测试 6</div>
</div>
</div>
</div>
</body>
</html>

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    0
  • P粉551084295

    P粉5510842952023-09-10 00:37:36

    DIV 4, 5 and 6 have float: left attributes and float around the text "test 3". If you delete this text, DIV 3 will no longer be visible: 

    #div1 {
  background-color: blue;
  width: 60%;
  height: 400px;
  text-align: center;
  margin: auto;
}

#div2 {
  background-color: red;
  width: 90%;
  height: 300px;
  text-align: center;
  margin: auto;
}

#div3 {
  background-color: gray;
  width: 95%;
  height: 200px;
  text-align: center;
  margin: auto;
}

#div4 {
  background-color: yellow;
  width: 20%;
  height: 100%;
  text-align: center;
  float:left;
}

#div5 {
  background-color: green;
  width: 40%;
  height: 100%;
  text-align: center;
  float:left;
}

#div6 {
  background-color: purple;
  width: 40%;
  height: 100%;
  text-align: center;
  float:left;
}
    <div id="div1">test 1
  <div id="div2">test 2
    <div id="div3">
      <div id="div4">test 4</div>
      <div id="div5">test 5</div>
      <div id="div6">test 6</div>
    </div>
  </div>
</div>

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