'a'（锚标记）的CSS样式不起作用

Question

Let's say I have some hyperlink but class and id of it are already used by other scripts. So how can I add some css to them ? I tried 2 things.

<div class='some_css'>
<a href='".$_SERVER['PHP_SELF']."' class='used' id='used1'>link1</a>
<a href='".$_SERVER['PHP_SELF']."' class='used' id='used2'>link2</a>
</div>

///css file
.some_css:a
{
color:#456e9c;
}

Another try

<span class='some_css'><a href='".$_SERVER['PHP_SELF']."' class='used' id='used1'>link1</a></span>
<span class='some_css'><a href='".$_SERVER['PHP_SELF']."' class='used' id='used2'>link2</a></span>

///css file   
.some_css:a
{
color:#456e9c;
}

Both are wrong..... I know I do something wrong, please help

Answer 1

Use a space, not a colon ( : ). Colons are meant for stuff like pseudo-classes/elements, and properties.

.some_css a
{
color:#456e9c;
}

Answer 2

用空格替换冒号（'：'）。

Answer 3

.some_css a {

}

(in other words, lose the ':')

Answer 4

Target a contained inside .some_css

.some_css a {
  color:#456e9c;
}

Answer 5

a href='".$_SERVER['PHP_SELF']."' class='used other_class' id='used1'>link1</a>

因此，您可以使用空格作为分隔符来为一个元素定义多个类...