CSS：内联样式将应用于< fieldset>但是当我写相同的代码到外部css和引用通过id没有样式应用 [英] CSS: inline style gets applied to <fieldset> but when I write the same code to external css and reference by id no style applied
问题描述
https://jsfiddle.net/tdyd5naw/
css文件被正确链接，因为页眉和页脚div确实有风格。我认为这是一个问题的选择器，但尝试了很多选项，似乎与W3C相关的我失去了。
The css file is linked correctly as the header and footer divs do get styled. I am thinking it is a problem with the selectors but after trying as many options that seemed relevant from W3C I am at a loss.
以下是相关的HTML
Here is the relevant html
<body>
<div class = "header"><h1>Library</h1>
</div>
<form action = "newUser.php" method = "POST">
<fieldset id="newAc">
<legend>New Accouunt Details</legend>
Choose Username: <br>
<input type = "text" name = "uname"/><br>
Choose Password: <br>
<input type = "password" name = "pass1"/><br>
Re-Enter Password: <br>
<input type = "password" name = "pass2"/><br>
</fieldset>
<fieldset id = "personalInfo">
<legend>Personal Info</legend>
First Name: <br>
<input type = "text" name = "fname"/><br>
Surname: <br>
<input type = "text" name = "sname"/><br>
Address Line 1: <br>
<input type = "text" name = "addr1"/><br>
Address Line 2: <br>
<input type = "text" name = "addr2"/><br>
City: <br>
<input type = "text" name = "city"/><br>
Telephone Home: <br>
<input type = "text" name = "hphone"/><br>
Telephone Mobile: <br>
<input type = "text" name = "mphone"/><br>
</fieldset>
<input type = "submit" value = "Register"/><br>
</form>
<div class = "footer">
</div>
</body>
这里是相应的CSS
#newAc {
position:relative;
disblay:block;
float:left;
top: 100px;
}
#personalInfo{
position: relative;
display: block;
float: left;
top: 100px
}
推荐答案
你做错了。从feildset #newAc更改为feildset＃newAc或#newAc
区别是
1. feildset #newAc是在$ b中查找带有#newAc的元素$ b feildset
2. feildset＃newAc正在feildset中查找元素
，id为#newAc
3. #newAc正在查找具有ID为＃ newAc
you are doing it wrong.change it from feildset #newAc to feildset#newAc or #newAc
The difference is
1. feildset #newAc is you are looking for an element with #newAc in a
feildset
2. feildset#newAc is looking for an element within feildset
with id #newAc
3. #newAc is looking for an element which has id #newAc
#newAc {
position:relative;
disblay:block;
float:left;
top: 100px;
}
#personalInfo{
position: relative;
display: block;
float: left;
top: 100px
}
<fieldset id="newAc">
<legend>New Accouunt Details</legend>
Choose Username: <br>
<input type = "text" name = "uname"/><br>
Choose Password: <br>
<input type = "password" name = "pass1"/><br>
Re-Enter Password: <br>
<input type = "password" name = "pass2"/><br>
</fieldset>
<fieldset id = "personalInfo">
<legend>Personal Info</legend>
First Name: <br>
<input type = "text" name = "fname"/><br>
Surname: <br>
<input type = "text" name = "sname"/><br>
Address Line 1: <br>
<input type = "text" name = "addr1"/><br>
Address Line 2: <br>
<input type = "text" name = "addr2"/><br>
City: <br>
<input type = "text" name = "city"/><br>
Telephone Home: <br>
<input type = "text" name = "hphone"/><br>
Telephone Mobile: <br>
<input type = "text" name = "mphone"/><br>
</fieldset>
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