How use additional CSS for custom template?

[محروم.كوم]

Hello,
in my board the links are text-decoration:none , but in the welcome header space I'd like to put the links dashed or underlined. If the text is like the following

HTML Code:

text bla bla text to be dashed


which instruction to put into additional CSS admin section? With the following the links not change in dashed:


HTML Code:
.extratext1 {
Color: #000000;
font: 12px verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif;
background-color: #FFFFFF;
padding: 1px 1px 1px 1px;
margin-top: 2px;
text-align: left;

}
.extratext1 a {
color: #386e9c;
text-decoration: dashed;

}
Thanks __DEFINE_LIKE_SHARE__