Changing CSS of existing theme

Hello

I have installed a very nice theme called michelle,
that doesn't have a definition for spacing between the lines (doesn't understand <p>)
and doesn't have a definition for bullets.
Where do I add these?

/*--- Designed by DesignMag.net ---*/

.commentlist li, #commentform input, #commentform textarea, #commentform p, #sidebar, #wp-calendar caption {
font-family:verdana, tahoma, arial;
}


#page {
text-align:right;
direction:rtl;
}
h1, h2, h3, #sidebar h2 {
font-family:arial, tahoma;
}
.commentlist li .avatar {
float:left;
}
#header {
margin:0 1px 0 0;
}
.narrowcolumn {
float:right;
padding: 0 45px 20px 0;
}
.widecolumn {
margin: 5px 150px 0 0;
}
.widecolumn .smallattachment {
margin: 5px 0 5px 5px;
}
.postmetadata {
clear:right;
}
#sidebar {
margin-left: 0;
margin-right: 545px;
}
img.alignright {
margin: 0 7px 2px 0;
}

img.alignleft {
margin: 0 0 2px 7px;
}

.alignright {
float: left;
}

.alignleft {
float: right;
}
code {
display:block;
direction:ltr;
text-align:left;
}
acronym, abbr, span.caps {
letter-spacing:0; /* fix opera bug */
}
html>body .entry ul {
padding:0 10px 0 0;
text-indent:10px;
}
html>body .entry li {
margin: 7px 10px 8px 0;
}
.entry ol {
padding: 0 35px 0 0;
}
#sidebar ul ul, #sidebar ul ol {
margin: 5px 10px 0 0;
}
#sidebar ul ul ul, #sidebar ul ol {
margin: 0 10px 0 0;
}
#commentform input {
margin: 5px 0 1px 5px;
}
#commentform #submit {
float:left;
}
.commentlist p {
margin: 10px 0 10px 5px;
}
#wp-calendar #next a {
padding-right:0;
padding-left:10px;
text-align:left;
}
#wp-calendar #prev a {
padding-left:0;
padding-right:10px;
text-align:right;
}
blockquote {
margin: 15px 10px 0 30px;
padding-left: 0;
padding-right: 20px;
border-left: 0 none;
border-right: 5px solid #ddd;
}
#email, #url {
direction:ltr;
}

 

any idea? I would greatly appreciate any resources that can help, tried adding some code myself for these purposes but it didn't work...

 

try this: p{line-height:18px;margin:0 0 10px 0;}

 

Nope, doesn't work, could there be something in the theme that is overriding the new code?

 

It's easier to fix that if you let us know the link where the theme is placed or give us a link of the demo theme so we can scout a working example.

 

This is the link to the theme itself - http://topwpthemes.com/michelle/

 

Make sure your code is same as this:

• padding-bottom: 10px;
• line-height: 22px;
• text-shadow: 0 1px 0 white;

 

I'm not sure I understand - which code?
I keep adding and removing everything I try cause nothing changes the way the page looks...

 

add those lines to CSS (at the bottom of the css), just include:

p {
padding-bottom: 10px !important;
line-height: 22px !important;
}

Code (markup):