使用.htaccess重写URL不适用于多次重写动态或静态

I have trouble in making fancy URLs with .htaccess.

I'm saving titles in database like "name-of-a-title" but problems start when I try to access it from URL, it doesn't show me the CSS, only the content.

This URL for blog works like:

http://example.com/blog?title=page-title

and I need a URL like this

http://example.com/blog/post-title

Here is my file, I'm a beginner.

<files .htaccess>
order allow,deny
deny from all
</files>

RewriteEngine On
RewriteRule ^blog$ blog.php
RewriteRule ^blog/$ blog.php
RewriteRule ^blog/([^/]*)$ /blog?title=$1 [L]

RewriteEngine On
RewriteRule ^category/([^/]*)$ category.php?$1 [L]

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /

    # To externally redirect /dir/abc.php to /dir/abc
    RewriteCond %{THE_REQUEST} ^[A-Z]{3,}\s/+(.+?)\.php[\s?] [NC]
    RewriteRule ^ /%1 [R=301,L,NE]

    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME}.php -f
    RewriteRule ^(.+?)/?$ $1.php [QSA,NC,L]
</IfModule>
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME}.php -f
    RewriteRule ^([^\.]+)$ $1.php [QSA,NC,L]
</IfModule>

RewriteEngine On
RewriteCond %{HTTP_HOST} ^my-webiste.com
RewriteRule (.*) http://www.my-website.com/$1 [R=301,L]

RewriteEngine On
ErrorDocument 404 /404.php

You just need to update your HTML so it uses absolute links to reference the CSS, images etc. With your fancy URLs the browser is now starting from /blog/ instead of root to find them.