我已经在这个问题上工作了两天，有一个解决方案，可能适用于你和任何人试图使一个响应固定宽度左侧，并有右侧填补屏幕的其余部分，而不环绕左侧。我认为这样做的目的是使页面在浏览器和移动设备上都能响应。

这里是密码

// Fix the width of the right side to cover the screen when resized $thePageRefreshed = true; // The delay time below is needed to insure that the resize happens after the window resize event fires // In addition the show() helps. Without this delay the right div may go off screen when browser is refreshed setTimeout(function(){ fixRightSideWidth(); $('.right_content_container').show(600); }, 50); // Capture the window resize event (only fires when you resize the browser). $( window ).resize(function() { fixRightSideWidth(); }); function fixRightSideWidth(){ $blockWrap = 300; // Point at which you allow the right div to drop below the top div $normalRightResize = $( window ).width() - $('.left_navigator_items').width() - 20; // The -20 forces the right block to fall below the left if( ($normalRightResize >= $blockWrap) || $thePageRefreshed == true ){ $('.right_content_container').width( $normalRightResize ); $('.right_content_container').css("padding-left","0px"); /* Begin test lines these can be deleted */ $rightrightPosition = $('.right_content_container').css("right"); $rightleftPosition = $('.right_content_container').css("left"); $rightwidthPosition = $('.right_content_container').css("width"); $(".top_title").html('window width: '+$( window ).width()+"&nbsp;"+'width: '+$rightwidthPosition+"&nbsp;"+'right: '+$rightrightPosition); /* End test lines these can be deleted */ } else{ if( $('.right_content_container').width() > 300 ){ $('.right_content_container').width(300); } /* Begin test lines these can be deleted */ $rightrightPosition = $('.right_content_container').css("right"); $rightleftPosition = $('.right_content_container').css("left"); $rightwidthPosition = $('.right_content_container').css("width"); $(".top_title").html('window width: '+$( window ).width()+"&nbsp;"+'width: '+$rightwidthPosition+"&nbsp;"+'right: '+$rightrightPosition); /* End test lines these can be deleted */ } if( $thePageRefreshed == true ){ $thePageRefreshed = false; } } /* NOTE: The html and body settings are needed for full functionality and they are ignored by jsfiddle so create this exapmle on your web site */ html { min-width: 310px; background: #333; min-height:100vh; } body{ background: #333; background-color: #333; color: white; min-height:100vh; } .top_title{ background-color: blue; text-align: center; } .bottom_content{ border: 0px; height: 100%; } .left_right_container * { position: relative; margin: 0px; padding: 0px; background: #333 !important; background-color: #333 !important; display:inline-block; text-shadow: none; text-transform: none; letter-spacing: normal; font-size: 14px; font-weight: 400; font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif; border-radius: 0; box-sizing: content-box; transition: none; } .left_navigator_item{ display:inline-block; margin-right: 5px; margin-bottom: 0px !important; width: 100%; min-height: 20px !important; text-align:center !important; margin: 0px; padding-top: 3px; padding-bottom: 3px; vertical-align: top; } .left_navigator_items { float: left; width: 150px; } .right_content_container{ float: right; overflow: visible!important; width:95%; /* width don't matter jqoery overwrites on refresh */ display:none; right:0px; } .span_text{ background: #eee !important; background-color: #eee !important; color: black !important; padding: 5px; margin: 0px; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <div class="top_title">Test Title</div> <div class="bottom_content"> <div class="left_right_container"> <div class="left_navigator_items"> <div class="left_navigator_item">Dashboard</div> <div class="left_navigator_item">Calendar</div> <div class="left_navigator_item">Calendar Validator</div> <div class="left_navigator_item">Bulletin Board Slide Editor</div> <div class="left_navigator_item">Bulletin Board Slide Show (Live)</div> <div class="left_navigator_item">TV Guide</div> </div> <div class="right_content_container"> <div class="span_text">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nullam ullamcorper maximus tellus a commodo. Fusce posuere at nisi in venenatis. Sed posuere dui sapien, sit amet facilisis purus maximus sit amet. Proin luctus lectus nec rutrum accumsan. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Ut fermentum lectus consectetur sapien tempus molestie. Donec bibendum pulvinar purus, ac aliquet est commodo sit amet. Duis vel euismod mauris, eu congue ex. In vel arcu vel sem lobortis posuere. Cras in nisi nec urna blandit porta at et nunc. Morbi laoreet consectetur odio ultricies ullamcorper. Suspendisse potenti. Nulla facilisi. Quisque cursus lobortis molestie. Aliquam ut scelerisque leo. Integer sed sodales lectus, eget varius odio. Nullam nec dapibus lorem. Aenean a mattis velit, ut porta nunc. Phasellus aliquam volutpat molestie. Aliquam tristique purus neque, vitae interdum ante aliquam ut. Pellentesque quis finibus velit. Fusce ac pulvinar est, in placerat sem. Suspendisse nec nunc id nunc vestibulum hendrerit. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Mauris id lectus dapibus, tempor nunc non, bibendum nisl. Proin euismod, erat nec aliquet mollis, erat metus convallis nulla, eu tincidunt eros erat a lectus. Vivamus sed mattis neque. In vitae pellentesque mauris. Ut aliquet auctor vulputate. Duis eleifend tincidunt gravida. Sed tincidunt blandit tempor. Duis pharetra, elit id aliquam placerat, nunc arcu interdum neque, ac luctus odio felis vitae magna. Curabitur commodo finibus suscipit. Maecenas ut risus eget nisl vehicula feugiat. Sed sed bibendum justo. Curabitur in laoreet dolor. Suspendisse eget ligula ac neque ullamcorper blandit. Phasellus sit amet ultricies tellus. In fringilla, augue sed fringilla accumsan, orci eros laoreet urna, vel aliquam ex nulla in eros. Quisque aliquet nisl et scelerisque vehicula. Curabitur facilisis, nisi non maximus facilisis, augue erat gravida nunc, in tempus massa diam id dolor. Suspendisse dapibus leo vel pretium ultrices. Sed finibus dolor est, sit amet pharetra quam dapibus fermentum. Ut nec risus pharetra, convallis nisl nec, tempor nisl. Vivamus sit amet quam quis dolor dapibus maximus. Suspendisse accumsan sagittis ligula, ut ultricies nisi feugiat pretium. Cras aliquam velit eu venenatis accumsan. Integer imperdiet, eros sit amet dignissim volutpat, tortor enim varius turpis, vel viverra ante mauris at felis. Mauris sed accumsan sapien. Interdum et malesuada fames ac ante ipsum primis in faucibus. Ut vel magna commodo, facilisis turpis eu, semper mi. Nulla massa risus, bibendum a magna molestie, gravida maximus nunc.</div> </div> </div> </div>

这是我的小提琴，它可能对你有用，就像对我一样。 https://jsfiddle.net/Larry_Robertson/62LLjapm/

Boushley的答案似乎是使用浮动来安排这一过程的最佳方法。然而，它也不是没有问题。展开元素中的嵌套浮动将不可用;它会破坏页面。

当涉及到扩展元素时，所显示的方法基本上是“伪造”的——它实际上并不是浮动的，它只是使用其边缘来处理固定宽度的浮动元素。

问题就在于:展开的元素不是浮动的。如果你尝试在展开元素中有任何嵌套的浮动，这些“嵌套的”浮动项根本就不是嵌套的;当你试图坚持明确:两者;在“嵌套”浮动项下，最终也会清除顶级浮动。

然后，为了使用Boushley的解决方案，我想添加一个div，如下所示: .fakeFloat ｛ 高度:100%; 宽度:100%; 浮:左; ｝ 并将其直接放置在展开的div中;所有展开的div的内容都应该在这个fakfloat元素中。

出于这个原因，我建议在这种特定情况下使用表。浮动元素实际上并不是为执行您想要的展开而设计的，而使用表的解决方案则是微不足道的。有一种说法是，浮动更适合布局，而不是表格。但无论如何，你并没有在这里使用float，你是在假装它——在我看来，这在某种程度上违背了这种特定情况下风格论证的目的。

尝试添加相对位置，删除右边的宽度和浮动属性，然后添加0值的左和右属性。

此外，您还可以添加左距规则，其值基于左元素的宽度(如果您需要在两者之间留出空间，则要加上一些像素)来保持其位置。

这个例子对我来说很有用:

   #search {
        width: 160px;
        height: 25px;
        float: left;
        background-color: #FFF;
    }

    #navigation {  
        display: block;  
        position: relative;
        left: 0;
        right: 0;
        margin: 0 0 0 166px;             
        background-color: #A53030;
    }

最简单的解决方法是使用保证金。这也将是响应!

<div style="margin-right: auto">left</div>
<div style="margin-left: auto; margin-right:auto">center</div>
<div style="margin-left: auto">right</div>

解决方案来自display属性。

基本上你需要让两个div像表格单元一样。所以不是使用float:left，你必须在两个div上使用display:table-cell，对于动态宽度div，你需要设置width:auto;也。这两个div都应该放在一个100%宽度的容器中，并使用display:table属性。

下面是css:

.container {display:table;width:100%}
#search {
  width: 160px;
  height: 25px;
  display:table-cell;
  background-color: #FFF;
}
#navigation {
  width: auto;
  display:table-cell;
  /*background-color: url('../images/transparent.png') ;*/
  background-color: #A53030;
}

*html #navigation {float:left;}

而HTML:

<div class="container">
   <div id="search"></div>
   <div id="navigation"></div>
</div>

重要提示:对于Internet Explorer，您需要在动态宽度div上指定float属性，否则空间将不会被填充。

我希望这能解决你的问题。 如果你愿意，你可以在我的博客上阅读关于这一点的完整文章。

我也遇到过类似的问题，并想出了以下行之有效的方法

CSS:

.top {
width: auto;
height: 100px;
background-color: black;
border: solid 2px purple;
overflow: hidden;
}
.left {
float:left;
width:100px;
background-color:#ff0000;
padding: 10px;
border: solid 2px black;
}
.right {
width: auto;
background-color:#00FF00;
padding: 10px;
border: solid 2px orange;
overflow: hidden;
}
.content {
margin: auto;
width: 300px;
min-height: 300px;
padding: 10px;
border: dotted 2px gray;
}

HTML:

<div class=top>top </div>
<div>
    <div class="left">left </div>
    <div class="right">
        <div class="content">right </div>
    </div>
</div>

这个方法不会在窗口收缩时自动换行，但会自动展开“内容”区域。它将为站点菜单(左)保持一个静态宽度。

以及自动展开内容框和左侧垂直框(站点菜单)的演示:

https://jsfiddle.net/tidan/332a6qte/