html - 如何根据子元素高度制作引导导航栏比例？

Question

我在我的网站上使用固定的导航栏。我现在遇到的问题是，每当我增加 Logo 的高度时， Logo 就会超出父导航栏。我想改变这种行为，以便导航栏增加其高度以适应新的 child 高度，从而使 Logo 保持包含状态。

.logo {
  max-height: 75px;
  padding: 1%;
  padding-top:2.35%;
}
.navbar-brand {
    padding: 0px !important;
}

.navbar-brand .logo{
    display:inline !important;
}
.navabar-custom{
    background: black !important;
    /*opacity:0.8;*/
}

.navabar-custom a{
    color:white !important;
}

.icon-bar{
background:white;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />

    <nav class="navbar navbar-fixed-top navabar-custom" role="navigation">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a href="" class="navbar-brand" href="index.php">
                <img class="logo" alt="logo" src="https://upload.wikimedia.org/wikipedia/commons/4/41/SEGA_logo.png">
                   
                </a>
            </div>
            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav navbar-right">
                    <li>
                        <a href="" class="triggermockup">About Us</a>
                    </li>
                    <li>
                        <a href="" class="triggermockup">Contact Us</a>
                    </li>
                    <li class="dropdown">
                        <a href="" class="triggermockup">Services</a>
                        
                    </li>
                </ul>
            </div>
            <!-- /.navbar-collapse -->
        </div>
        <!-- /.container -->
    </nav>

Answer 1

.navbar-brand(.logo 的父元素)的高度固定为 50px。只需将其设置为自动

.logo {
  max-height: 75px;
  padding: 1%;
  padding-top:2.35%;
}
.navbar-brand {
    padding: 0px !important;
    height: auto !important; /******* add this *******/
}

.navbar-brand .logo{
    /*display:inline !important;*/
    /* this is not needed */
}
.navabar-custom{
    background: black !important;
    /*opacity:0.8;*/
}

.navabar-custom a{
    color:white !important;
}

.icon-bar{
background:white;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />

    <nav class="navbar navbar-fixed-top navabar-custom" role="navigation">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a href="" class="navbar-brand" href="index.php">
                <img class="logo" alt="logo" src="https://upload.wikimedia.org/wikipedia/commons/4/41/SEGA_logo.png">
                   
                </a>
            </div>
            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav navbar-right">
                    <li>
                        <a href="" class="triggermockup">About Us</a>
                    </li>
                    <li>
                        <a href="" class="triggermockup">Contact Us</a>
                    </li>
                    <li class="dropdown">
                        <a href="" class="triggermockup">Services</a>
                        
                    </li>
                </ul>
            </div>
            <!-- /.navbar-collapse -->
        </div>
        <!-- /.container -->
    </nav>