flexbox- I cant figure out what's causing this div to have a blocked out space in flexbox-CodePudding

if anybody could help me solve what's causing this purple blocked-out box in my #header-content it would be greatly appreciated.

enter image description here

#header {
    background-color: #343c63;
    height: 400px;
   
}

.main-nav {
    display: flex;
    padding: 0px 100px 0px 100px;
    list-style: none;
}


.main-nav li:first-child {
    margin-right: auto;
}

.main-nav a {
    margin: 10px;
    color: white;
    text-decoration: none;
}

#header-content {
   display: flex;
  
   padding-top: 100px;
   padding-left: 100px;
   padding-right: 100px;
}

#image-1 {
 margin-right: 100px;
  
}

<html>
    <head>
        <title>top-flex-box</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <link rel="stylesheet" href="index.css">
    </head>
   
    <body>
        
        <div id="header">
        <nav>
            <ul >
                <li><a href="#" >Header Logo</a></li>
                
                <li><a href="#">Link One</a></li>
                <li><a href="#">Link Two</a></li>
                <li><a href="#">Link Three</a></li>
                
            </ul>
        </nav>
            
            <div id="header-content">
                <div>
                <h1>This website is awesome</h1>
                <p>This website has some subtext that goes here under the main title. It's smaller font and the color is lower contrast.</p>
                </div>
                
                <div id='image-1'>
                    <p>this is a placeholder for an image</p>
                </div>
            </div>
            
        </div>
        
        
        
    </body>
</html>

CodePudding user response：

[Edited]

Purple blocked-out box are default flex-box behaviour, which prevents flex-boxes of becoming smaller than it's contents.

it can solved by:

1 .You remove purple blocked-out box by use inline-block

#header-content {
     display: inline-flex;
     padding-top: 100px;
     padding-left: 100px;
     padding-right: 100px;
  }

The display:inline-flex does not make flex items display inline. It makes the flex container display inline. The main difference between display: flex and display: inline-flex is that display: inline-flex will make the flex container an inline element while its content maintains its flexbox properties.

Removed it by giving full properties to control to child's eg:

#header-content {
  display: flex;
  padding-top: 100px;
  padding-left: 100px;
  padding-right: 100px;
}
    
#image-1 {
  width: 50vw;
  margin-right: 100px;
}

Control the purple blocked-out box using justify-content properties

  #header-content {
    display: flex;
    justify-content: space-between;
    padding-top: 100px;
    padding-left: 100px;
    padding-right: 100px;
  }