侧边栏不会展开到底部

Question

问题在哪里，如何解决？

我不想删除或更改任何css代码，如float和display。

inliner_content，用于将边栏设置在内容行中。

我使用换行类来获得粘性页脚。

我为表单中的DIV使用了一些自定义的类和simaulate表结构。

此外，此代码是一个示例代码，其中的一系列代码已被重复。

.wrap
{
direction: rtl;
height:100%;
width: 100%;
}
#menu_icon_mng
{    display: none;
width: 25px;
height: 25px;
background: url(pics/menu_icon.gif) center;
background-size: 25px;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
-o-border-radius: 3px;
border-radius: 3px;
margin-bottom: 0;
}
.main_m_mng
{
/* height: 14%; */
border-bottom: 1px solid;
height: 25px;
line-height: 25px;
/*      display: inline-block; */
/*     float: right; */
padding-right: 10px;
/*     text-align: center; */
transition: all 0.5s ease 0s;
cursor:pointer;
}
.main_m_mng_name
{
/* height: 14%; */
border-bottom: 1px solid;
height: 25px;
line-height: 25px;
/*      display: inline-block; */
/*     float: right; */
padding-right: 10px;
/*     text-align: center; */
/*transition: all 0.5s ease 0s;*/
/*cursor:pointer;*/
}
.main_m_mng i
{
margin-left: 15px;
float: left;
line-height: 25px;
/*     display: inline-block; */
/*     color:white; */
}
.main_m_mng:hover
{
background-color: #e0dddd;
padding: 0 20px 0;
margin: 0 1px 0;
/*     -webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px; */
}
/* .main_m_mng:after {
border-bottom: 1px solid #000;
content: '';
} */
.sub_menu_mng {
white-space: nowrap;
display: none;
}
.inliner_content {
width: 100%;
min-height: 77%;
overflow: hidden;
/* display: table; */
/* padding-bottom: 8px; */
/* margin-bottom: -19px; */
}
.main_m_link_mng {
transition: all 0.5s ease 0s;
width: 100%;
}
.tbl_frm {
display: block;
}
.tbl_tr {
display: block;
margin-bottom: 10px;
}
.tbl_td {
display: inline-block;
min-width: 150px;
}
.tbl_thead {
display: block;
}
.tbl_th {
display: inline-block;
min-width: 200px;
margin: auto;
}
.footer {
/* position: relative; */
height: 150px;
/* margin-top: -150px; */
background-color: #4a4a4a;

background-size: 116px;
}

<div class="wrap">
<div class="inliner_content">

<div class="shadow_main_mnu_mng" style="
display: none;
/* direction: rtl; */
font-family: monospace;
font-size: 12px;
/* min-height: inherit; */
/* height: 100%; */
width: 20%;
min-width: 150px;
max-width: 150px;
background-color: #8a4747;
float: right;
/* display: flex; */
margin-top: 82.7%;
/* margin-right: -150; */
/* z-index: 100; */
padding-bottom: 100%;
/* margin-bottom: 1px; */
"></div>
<div style="min-height: 100%;height: inherit;/* padding-bottom: inherit; */width: 20%;position: absolute;/* clear: both; */min-width: 150px;max-width: 150px;background-color: #bbb2b2;float: right;/* display: flex; *//* bottom: -62px; *//* flex-direction: column; *//* margin-top: 0; *//* margin-top: -256px; *//* margin-bottom: 40px; */z-index: 100;" class="main_menu_mng">
<div class="main_m_mng_name">Jack Hue     </div>
<a href="#" id="menu_icon_mng" onclick="f_menu()" onblur="f_menu()"></a>
<div class="main_menu_list_mng" id="main_menu_list_mng" style="display: block;">
<a class="main_m_link_mng" href=".mpnt=nzmnd">
<div class="main_m_mng">
<i class="fa fa-volume-control-phone"></i>Account Setting
</div>
</a>
<a class="main_m_link_mng" href="new/mpnt=nzmnd">
<div class="main_m_mng">
<i class="fa fa-volume-control-phone"></i>Posts
</div>
</a>
<a class="main_m_link_mng" href="?pmodir=2646&amp;mpnt=nzmnd"><div class="main_m_mng">
<i class="fa fa-volume-control-phone"></i>Users</div></a>
<a class="main_m_link_mng">
<div class="main_m_mng"><i class="fa fa-product-hunt"></i>Admin Users
</div>
</a>
<!-- <div style="position: absolute;z-index: 105;"> -->
<div id="sub_menu_mng" class="w3-animate-top-menu sub_menu_mng">
<div><a href="#">sub menu long</a></div>
<div><a href="?mpnt=test">User Register</a></div>
<div><a href="#">Sub menu3</a></div>
</div>
<!-- </div> -->
<a class="main_m_link_mng">
<div class="main_m_mng"><i class="fa fa-product-hunt"></i>New Admin
</div>
</a>
<!-- <div style="position: absolute;z-index: 105;"> -->
<div id="sub_menu_mng" class="w3-animate-top-menu sub_menu_mng">
					<div><a href="#">sub menu long</a></div>
					<div><a href="?mpnt=test">User Register</a></div>
					<div><a href="#">Sub menu3</a></div>
</div>
<!-- </div> -->
<div class="main_m_mng"><a class="main_m_link_mng"><i class="fa fa-product-hunt"></i> Admin Users old link</a>
<div style="position: absolute;z-index: 105;">
<div id="sub_menu_mng" class="w3-animate-top-menu sub_menu_mng">
							<div><a href="#">sub menu long</a></div>
							<div><a href="?mpnt=test">User Register</a></div>
							<div><a href="#">Sub menu3</a></div>
</div>
</div>
</div>
</div>
</div>
<div style="
/* float: left; */
/* display: inline-block; */
/* width: 73%; */
padding: 0 10px;
padding-right: 160px;
/* margin-right: -150px; */
background-color: blue;
/* z-index: -4; */
top: 0;
min-height: 100%;
" class="content">

<script src="ref/cml_chk.js"></script>
<script src="ref/statlist2.js"></script>
<!--<script src="chk_frm_reg.js" ></script>-->
<input type="hidden" class="prov1" value="6">
<form name="frmreg" method="post" onreset="" onsubmit="return display_err1()" style="
margin-block-end: 0em;
">
<input type="hidden" name="pr_reg_form" value="139">

<input type="hidden" name="pr_reg_form" value="139">
<div style="margin-right:15px">
<div class="tbl_tr">
<div class="tbl_td">Date (Today):</div>
<div class="tbl_td" align="right"> :::::::   
</div>
</div>
</div>
<div id="pers_info">
<div width="100%" border="0" dir="rtl" cellspacing="10px" style="margin-right:15px" class="tbl">
<div class="tbl_thead">
<div class="tbl_th" colspan="3">Pers Info
<hr>
<br></div>
</div>
<!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--        if(){-->
<div class="tbl_tr" style="display: none">
<div class="tbl_td">none disp :</div>
<div class="tbl_td" colspan="2" title="">
<div>
<select name="prov" class="province"></select>
<select name="city" class="city"></select>
</div>
</div>
</div>
<!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->                <!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->                <!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->
</div>
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--        -->
<!--        //================================================================================-->
<!--        //================================================================================-->
<!--        //================================================================================-->
</div>
</div>

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<br>
<br>
</form>    
</div>
</div>
<div class="spacer_ftr" style="height: 150px;"></div>
</div>
<div class="footer">
footer
</div>

我使用clearfix、display:table和display:table-cell技巧，但不起作用

Answer 1

通过将position: relative;添加到body元素，侧边栏将完全展开。

你的.main_menu_mng有一个position: absolute;，但它的祖先都没有定位，所以你的元素是相对于根元素(或初始包含块(定位的，并且来自W3C:

根元素所在的包含块是一个称为初始包含块的矩形对于连续媒体，它具有视口的尺寸，并固定在画布原点；它是用于分页媒体的页面区域。初始包含块的"direction"属性与根元素的属性相同。

https://www.w3.org/TR/CSS2/visudet.html#containing-区块详细信息

因此，如果没有具有相对位置的父元素，则元素的高度取决于根元素(即视口(的高度。

Answer 2

您的代码还有很多需要改进的地方，还有不同更好的方法，但根据您的问题和您对我第一个答案的评论，我试图用您的代码解决您需要的问题。

您可以将position: relative;添加到.inliner_content(在这种情况下，它将停止在页脚间隔符处(。

如果将以下CSS添加到.contentdiv中，则蓝色表单部分也会展开，直到页脚间隔符为止。

.content {
position: absolute;
width: 80%;
}

在这里，您可以找到一个示例，其中我将刚才描述的所有内容添加到您的代码中。

.wrap
{
direction: rtl;
height:100%;
width: 100%;
}
#menu_icon_mng
{    display: none;
width: 25px;
height: 25px;
background: url(pics/menu_icon.gif) center;
background-size: 25px;
-moz-border-radius: 3px;
-webkit-border-radius: 3px;
-o-border-radius: 3px;
border-radius: 3px;
margin-bottom: 0;
}
.main_m_mng
{
/* height: 14%; */
border-bottom: 1px solid;
height: 25px;
line-height: 25px;
/*      display: inline-block; */
/*     float: right; */
padding-right: 10px;
/*     text-align: center; */
transition: all 0.5s ease 0s;
cursor:pointer;
}
.main_m_mng_name
{
/* height: 14%; */
border-bottom: 1px solid;
height: 25px;
line-height: 25px;
/*      display: inline-block; */
/*     float: right; */
padding-right: 10px;
/*     text-align: center; */
/*transition: all 0.5s ease 0s;*/
/*cursor:pointer;*/
}
.main_m_mng i
{
margin-left: 15px;
float: left;
line-height: 25px;
/*     display: inline-block; */
/*     color:white; */
}
.main_m_mng:hover
{
background-color: #e0dddd;
padding: 0 20px 0;
margin: 0 1px 0;
/*     -webkit-border-radius: 5px;
-moz-border-radius: 5px;
border-radius: 5px; */
}
/* .main_m_mng:after {
border-bottom: 1px solid #000;
content: '';
} */
.sub_menu_mng {
white-space: nowrap;
display: none;
}
.inliner_content {
width: 100%;
min-height: 77%;
overflow: hidden;
position:relative;
/* display: table; */
/* padding-bottom: 8px; */
/* margin-bottom: -19px; */
}
.main_m_link_mng {
transition: all 0.5s ease 0s;
width: 100%;
}
.tbl_frm {
display: block;
}
.tbl_tr {
display: block;
margin-bottom: 10px;
}
.tbl_td {
display: inline-block;
min-width: 150px;
}
.tbl_thead {
display: block;
}
.tbl_th {
display: inline-block;
min-width: 200px;
margin: auto;
}
.footer {
/* position: relative; */
height: 150px;
/* margin-top: -150px; */
background-color: #4a4a4a;

background-size: 116px;
}
.content {
position: absolute;
width: 80%;
}

<div class="wrap">
<div class="inliner_content">

<div class="shadow_main_mnu_mng" style="
display: none;
/* direction: rtl; */
font-family: monospace;
font-size: 12px;
/* min-height: inherit; */
/* height: 100%; */
width: 20%;
min-width: 150px;
max-width: 150px;
background-color: #8a4747;
float: right;
/* display: flex; */
margin-top: 82.7%;
/* margin-right: -150; */
/* z-index: 100; */
padding-bottom: 100%;
/* margin-bottom: 1px; */
"></div>
<div style="min-height: 100%;height: inherit;/* padding-bottom: inherit; */width: 20%;position: absolute;/* clear: both; */min-width: 150px;max-width: 150px;background-color: #bbb2b2;float: right;/* display: flex; *//* bottom: -62px; *//* flex-direction: column; *//* margin-top: 0; *//* margin-top: -256px; *//* margin-bottom: 40px; */z-index: 100;" class="main_menu_mng">
<div class="main_m_mng_name">Jack Hue     </div>
<a href="#" id="menu_icon_mng" onclick="f_menu()" onblur="f_menu()"></a>
<div class="main_menu_list_mng" id="main_menu_list_mng" style="display: block;">
<a class="main_m_link_mng" href=".mpnt=nzmnd">
<div class="main_m_mng">
<i class="fa fa-volume-control-phone"></i>Account Setting
</div>
</a>
<a class="main_m_link_mng" href="new/mpnt=nzmnd">
<div class="main_m_mng">
<i class="fa fa-volume-control-phone"></i>Posts
</div>
</a>
<a class="main_m_link_mng" href="?pmodir=2646&amp;mpnt=nzmnd"><div class="main_m_mng">
<i class="fa fa-volume-control-phone"></i>Users</div></a>
<a class="main_m_link_mng">
<div class="main_m_mng"><i class="fa fa-product-hunt"></i>Admin Users
</div>
</a>
<!-- <div style="position: absolute;z-index: 105;"> -->
<div id="sub_menu_mng" class="w3-animate-top-menu sub_menu_mng">
<div><a href="#">sub menu long</a></div>
<div><a href="?mpnt=test">User Register</a></div>
<div><a href="#">Sub menu3</a></div>
</div>
<!-- </div> -->
<a class="main_m_link_mng">
<div class="main_m_mng"><i class="fa fa-product-hunt"></i>New Admin
</div>
</a>
<!-- <div style="position: absolute;z-index: 105;"> -->
<div id="sub_menu_mng" class="w3-animate-top-menu sub_menu_mng">
					<div><a href="#">sub menu long</a></div>
					<div><a href="?mpnt=test">User Register</a></div>
					<div><a href="#">Sub menu3</a></div>
</div>
<!-- </div> -->
<div class="main_m_mng"><a class="main_m_link_mng"><i class="fa fa-product-hunt"></i> Admin Users old link</a>
<div style="position: absolute;z-index: 105;">
<div id="sub_menu_mng" class="w3-animate-top-menu sub_menu_mng">
							<div><a href="#">sub menu long</a></div>
							<div><a href="?mpnt=test">User Register</a></div>
							<div><a href="#">Sub menu3</a></div>
</div>
</div>
</div>
</div>
</div>
<div style="
/* float: left; */
/* display: inline-block; */
/* width: 73%; */
padding: 0 10px;
padding-right: 160px;
/* margin-right: -150px; */
background-color: blue;
/* z-index: -4; */
top: 0;
min-height: 100%;
" class="content">

<script src="ref/cml_chk.js"></script>
<script src="ref/statlist2.js"></script>
<!--<script src="chk_frm_reg.js" ></script>-->
<input type="hidden" class="prov1" value="6">
<form name="frmreg" method="post" onreset="" onsubmit="return display_err1()" style="
margin-block-end: 0em;
">
<input type="hidden" name="pr_reg_form" value="139">

<input type="hidden" name="pr_reg_form" value="139">
<div style="margin-right:15px">
<div class="tbl_tr">
<div class="tbl_td">Date (Today):</div>
<div class="tbl_td" align="right"> :::::::   
</div>
</div>
</div>
<div id="pers_info">
<div width="100%" border="0" dir="rtl" cellspacing="10px" style="margin-right:15px" class="tbl">
<div class="tbl_thead">
<div class="tbl_th" colspan="3">Pers Info
<hr>
<br></div>
</div>
<!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--        if(){-->
<div class="tbl_tr" style="display: none">
<div class="tbl_td">none disp :</div>
<div class="tbl_td" colspan="2" title="">
<div>
<select name="prov" class="province"></select>
<select name="city" class="city"></select>
</div>
</div>
</div>
<!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->                <!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->                <!--////////////////////////////////////////================================Form main===========================================================================================================/////////////////-->
<div class="tbl_tr">
<div class="tbl_td" width="">Name :</div>
<div class="tbl_td" colspan="2"><input name="fname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div> 
<div class="tbl_tr">
<div class="tbl_td">Last Name :</div>
<div class="tbl_td" colspan="2"><input name="lname" id="form_text" type="text" onkeypress="return checkContentname(event)" value=""></div>
</div>
<div class="tbl_tr">
<div class="tbl_td" width="">ID :</div>
<div class="tbl_td">
<input style="margin-left: 50px" onchange="tel_err2()" name="cmli" id="form_text" type="text" maxlength="10" onkeypress="return checknum(event)" onblur="/*check2()*/" value="">
</div>
</div>
<!--//===================================================================================-->
</div>
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--//===================================================================================-->
<!--        -->
<!--        //================================================================================-->
<!--        //================================================================================-->
<!--        //================================================================================-->
</div>
</div>

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<br>
<br>
</form>    
</div>
</div>
<div class="spacer_ftr" style="height: 150px;"></div>
</div>
<div class="footer">
footer
</div>

Answer 3

您必须使用：

body {
margin: 0;
}