修改css样式表没有任何效果，将CSS样式表中的内容复制到新的表中导入后，样式同样不在页面显示
在同一个表中，属性相同但是class名不同，调用自己新建的class名不显示效果，但是用原来的就可以
请问是什么原因,后来新建了css表，将原css所有内容原封不动复制进去，再导入，但是效果却不显示，
bootstrap的样式可以正常显示，js同样可以正常显示
CSS代码
@charset "utf-8";
*{margin:0px; padding:0px;}
body{font-family:"微软雅黑", Arial, Helvetica, sans-serif; font-size:12px; line-height:1.5em; color:#555555;background:#f3f3f3;}
ul{list-style-type:none;}
input,select,textarea{vertical-align:middle; font-family:inherit; font-size:inherit; color:inherit; outline:none;}
h1,h2,h3,h4,h5,h6{font-weight:normal;}
a{color:#555555; text-decoration:none; outline:none;}
a:hover,a.glink:hover,a.blink:hover{ text-decoration:none;outline:none;}
.clear{ clear:both; font-size:0; height:0; line-height:0;overflow:hidden}
a img{ border:0;}
.leftF{ float:left;}
.centerF{float:left;}
.rightF{ float:right;}
.main{ width:1116px; margin:0 auto; padding-bottom:330px;}
.main .mainleft{ width:210px;top:90px; position:relative;}
.main .mainright{ float:left;padding:0px;width:905px;}
.foot{ background:#999999; color:#ffffff; padding:20px 0; text-align:center; font-size:14px; line-height:24px;}
.footinner{ border-top:1px solid #dddddd; color:#ffffff; padding:45px 0 80px 0; text-align:center; font-size:14px; line-height:24px;}
.footinner .footintop{ color:#333333;}
.footinner .footinbto{ color:#555555;}
.bigperson{ margin-bottom:-57px; top:-77px; position:absolute;}
.bigperson .touxiang{ width:210px; text-align:center;}
.bigperson .touxiang img{ width:100px; height:100px; border:2px solid #fff; border-radius:50%;}
.bigperson .personname{ text-align:center; font-size:18px; color:#555555; line-height:32px;}
header #header-top {top: 0; right: 0; left: 0; padding: 0 1em; height: 3em; line-height: 3em; color: #fff; background-color: #2c3e50; z-index: 2;}
header #header-top #logout { float: right; }
header #header-top #logout a { color: inherit; }
.current a{display:block; background:#61b988;line-height:38px; height:38px; margin:0px 0 15px 0; color:#fff; font-size:14px;}
.current a{color:#FFF;}
.funclistul {position:relative;}
.funclistul li{ line-height:38px; height:38px;font-size:14px;}
.funclistul li a{ text-align:center;display:block; padding:0; line-height:38px; height:38px; font-size:14px; overflow:hidden;}
.funclistul li a:hover{ background:#61b988; color:#fff;}
.funclistul li b{ width:21px; height:20px; margin:10px 5px 0 0px;}
.line {text-align:center;height:0px!important;border-top:solid 1px #CCC;}
#divide_line {position:absolute;height:1316px;border-color:#CCC;border-left-style:solid;border-width:1px}
#frame_content {border:0px; height:981px; min-height:700px;}
.fl{float:left;}
.fr{float:right;}
.Wrapbody{width:890px;height:900px;overflow:hidden;padding-top:20px;position:relative;margin-left: 50px;}
.zla_m_tab { width:850px;height:40px; padding-top:12px; border-bottom:2px #ccc solid;font-size:20px;color:#777;}
.zla_m_item { float:left; width:106px; height:40px; }
.zla_m_item a ,.zla_m_cur a { display:inline-block; width:150px; height:40px; line-height:40px; text-align:center;font-size:20px;color:#777;}
.zla_m_item a:hover , .zla_m_cur a { display:inline-block; background:url(../img/tri.png) center 35px no-repeat; text-decoration:none;
border-bottom:2px solid #61b988;font-size:20px;color:#333;}
.Div {
margin-top:30px;
}
.ulDiv {
margin-top:30px;
}
.ulDiv ul li {
margin-left: 3px;
position:relative;
width: 270px;
margin-bottom: 32px;
background-color: #fff;
float:left;
zoom: 1;
letter-spacing: 0;
overflow: hidden;
height: 150px;
margin-right: 16px;
border-radius: 3px;
}
.ulDiv ul li:hover {
border-color: rgba(101, 204, 153, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(101, 204, 153, 0.6);
}
.Mcon1img .Gd {
display: block;
width: 23px;
height: 23px;
position: absolute;
top: 0px;
right: 0px;
display: none;
}
.Mconright{padding:20px;}
.Mconright h3{font-size:18px;padding:7px 0 10px 0;}
.Mconright h3 a{float:left}
.Mconright p{color:#666;font-size:12px;}
.Mcon1img{position:relative;}
.Mcon1img:hover .Gd{display:block;}
.Mconright h3 i{display:none;width:8px;height:8px;background:red;border-radius:8px;margin-left: 5px;float:left;}
.red {
color: #b9423c;
}
.green {
color: #61b988;
}
.force_red {
color: #b9423c!important;
}
.force_green {
color: #61b988!important;
}
.block {
padding: 30px 0;
}
.aline {
margin-right: 50px;
padding: 10px 0;
float: right;
}
.four_in_one {
height: 50px;
line-height: 50px;
width: 172px;
padding: 10px 50px 10px 0px;
float: right;
text-align: center;
vertical-align: middle;
}
.specail_line_one {
margin-right: 150px;
}
.specail_line_two {
margin-right: 68px;
}
.specail_line_three {
margin-right: 357px;
}
.specail_line_four {
margin-right: 111px;
}
.normal_one {
font-size: 2em;
vertical-align: middle;
}
.normal_two {
font-size: 1.5em;
vertical-align: middle;
}
.normal_three {
width: 50px;
display: inline-block;
font-size: 2em;
vertical-align: top;
}
.normal_one,
.normal_two,
.normal_three {
margin: 5px;
height: 30px;
line-height: 30px;
overflow: hidden;
}
.one_block {
width: 150px;
height: 30px;
text-align: center;
}
.one_line {
width: 750px;
height: 30px;
}
.many_lines {
width: 750px;
height: 150px;
resize: none;
overflow: scroll;
}
.exam_many_lines {
width: 720px;
height: 150px;
resize: none;
overflow: scroll;
}
.one_block,
.one_line,
.many_lines,
.exam_many_lines {
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
transition: border linear 0.2s, box-shadow linear 0.2s;
font-size: 2em;
display: inline-block;
padding: 4px;
color: #555555;
vertical-align: middle;
background-color: #ffffff;
border: 1px solid #e3e3e3;
border-radius: 3px;
margin: 3px 0;
}
.one_block:focus,
.one_line:focus,
.many_lines:focus,
.exam_many_lines:focus {
border-color: rgba(101, 204, 153, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(101, 204, 153, 0.6);
}
.submit_button {
width: 200px;
height: 41px;
transition: border linear 0.2s, box-shadow linear 0.2s;
font-size: 1.5em;
display: inline-block;
padding: 4px;
color: #555555;
vertical-align: middle;
background-color: #ffffff;
border: 1px solid #e3e3e3;
border-radius: 3px;
margin: 3px 0;
cursor: hand;
}
.submit_button:hover {
border-color: rgba(101, 204, 153, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(101, 204, 153, 0.6);
}
.submit_button:focus {
border-color: rgba(101, 204, 153, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(101, 204, 153, 0.6);
}
.submit_button:disabled {
color: #555555;
background-color: #e8e8e8;
}
.submit_button:disabled:hover {
border-color: rgba(232, 232, 232, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 0 0 rgba(0, 0, 0, 0.075), 0 0 0 rgba(232, 232, 232, 0.6);
}
.submit_button:disabled:focus {
border-color: rgba(232, 232, 232, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 0 0 rgba(0, 0, 0, 0.075), 0 0 0 rgba(232, 232, 232, 0.6);
}
.check {
margin-right: 10px;
}
.score {
padding: 30px 50px;
height: 400px;
overflow: scroll;
}
.score_title {
font-size: 1.5em;
}
.button_block {
padding: 10px 0;
text-align: center;
}
.marklist {
z-index: 50;
width:250px;
top:105px;
right:160px;
position:fixed;
background: #fff;
padding: 10px;
border-radius: 3px;
}
.mark_title,
.submit_paper,
.marklist ul li {
position:relative;
margin-bottom: 32px;
background: #fff;
float:left;
zoom: 1;
letter-spacing: 0;
overflow: hidden;
border-radius: 3px;
text-align: center;
border: 1px solid #61b988;
}
.mark_title:hover,
.submit_paper:hover,
.marklist ul li:hover {
border-color: rgba(101, 204, 153, 0.8);
outline: 0;
outline: thin dotted \9;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(101, 204, 153, 0.6);
}
.mark_title {
width: 80px;
height: 30px;
margin: 10px 120px 10px 8px;
}
.submit_paper {
width: 80px;
height: 30px;
margin: 20px 8px 10px 150px;
}
.marklist ul li {
width: 30px;
height: 30px;
margin: 5px 8px;
}
.mark {
line-height: 30px;
font-size: 1.5em;
color: #61b988;
background: #fff;
text-align: center;
vertical-align: middle;
}
.active {
background: #61b988!important;
color: #fff;
}
.active a {
background: #61b988!important;
color: #fff;
}
header #exam_top {z-index:999!important;position: fixed; opacity:0.9; top: 0; right: 0; left: 0; padding: 0 1em; height: 4em; line-height: 4em; color: #3f3f3f; background-color: #fff; z-index: 2;font-size: 1.5em;}
.exam_foot {z-index:999!important;margin-top:36px; background:#fefefe; color:#3f3f3f; padding:20px 0; text-align:center; font-size:14px; line-height:24px;}
.center {
text-align:center;
}
.exam_head {
padding: 0 10px;
}
.alert_screen {position: fixed; top: 0; right: 0; bottom: 0; left: 0; background-color: #fff; z-index: 1000;}
.alert_block {margin-top: 300px; text-align: center;}
.alert_msg {font-size: 2em;}
.quit_btn,
.alert_btn {margin-top: 50px;text-align: center;}
.examright {position:relative; top:105px; padding:25px; width:770px; background: #fff; border-radius: 3px;margin-bottom: 100px;}
.title{
font-size: 2em;
padding: 10px 0;
}
.content_box {
padding: 20px;
}
.choice_box {
padding-left: 20px;
}
.content {
height: 30px;
line-height: 30px;
font-size: 1.5em;
padding: 10px 0;
}
.title:target,
.content_box:target{
padding-top:72px;
}
@media screen and (max-width: 1400px){
.marklist {
right:100px;
}
}
@media screen and (max-width: 1300px){
.marklist {
right:50px;
}
}
@media screen and (max-width: 1200px){
.marklist {
right:0px;
}
}
<header>
<div id="exam_top">
<div class="leftF">
<span class="exam_head">专业简答题</span>
</div>
<div class="rightF">
<span class="exam_head">账号：<%=(String) session.getAttribute("login")%></span>
</div>
<div class="center">
<span class="exam_head">考试限时：30分钟</span> <span class="exam_head">剩余时间：<span
class="green" id="time"></span>分钟
</span>
</div>
</div>
</header>
<div class="main">
<div class="examright centerF"><!-- class leftF被修改 -->
<div class="block" >
<form action="SaveAnswer" method="post" id="form1">
<c:forEach items="${sq}" var="QsInfo" varStatus="vs">
<input type="hidden" name="index${vs.count}" value="${QsInfo.essayId}"/><!-- 隐藏题目ID传递给后台 -->
<!--循环输出分割线———————————————————————————————————— -->
<!-- EL表达式可以自动转型 -->
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">专业简答题${vs.count} ：</h3>
</div>
<div class="panel-body">${QsInfo.eTitle}</div>
<div class="form-group">
<textarea class="form-control" rows="3" name="ans${vs.count}"></textarea>
</div>
</div>
</c:forEach>
</form>
<div>
<button type="button" class="btn btn-success btn-block" onclick="sub()">提交试卷</button>
</div>
<!--———————————————————————————————————————————————————————— -->
</div>
</div>
</div>
主要代码
<header>
<div id="exam_top">
<div class="leftF">
<span class="exam_head">专业简答题</span>
</div>
<div class="rightF">
<span class="exam_head">账号：<%=(String) session.getAttribute("login")%></span>
</div>
<div class="center">
<span class="exam_head">考试限时：30分钟</span> <span class="exam_head">剩余时间：<span
class="green" id="time"></span>分钟
</span>
</div>
</div>
</header>
<div class="main">
<div class="examright centerF"><!-- class leftF被修改 -->
<div class="block" >
<form action="SaveAnswer" method="post" id="form1">
<c:forEach items="${sq}" var="QsInfo" varStatus="vs">
<input type="hidden" name="index${vs.count}" value="${QsInfo.essayId}"/><!-- 隐藏题目ID传递给后台 -->
<!--循环输出分割线———————————————————————————————————— -->
<!-- EL表达式可以自动转型 -->
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">专业简答题${vs.count} ：</h3>
</div>
<div class="panel-body">${QsInfo.eTitle}</div>
<div class="form-group">
<textarea class="form-control" rows="3" name="ans${vs.count}"></textarea>
</div>
</div>
</c:forEach>
</form>
<div>
<button type="button" class="btn btn-success btn-block" onclick="sub()">提交试卷</button>
</div>
<!--———————————————————————————————————————————————————————— -->
</div>
</div>
</div>
你最起码把显示的地方给标记出来，这么多代码怎么看啊？不过一般出现这样的问题都是权重的问题，也就是说你定义样式的权重不够。