well, I would not change my wife, just to get the Lady styled in a different way, one get's used to something, Life is hard enough, as it comes, to handle it all. And what I am reading here on Problems, for the past 2 Years, is mostly not even related to 1.5.6.4+ !
So, better, noone should even try to 'tax' it like a not longer loved, unwanted and good for nothing stepchild, it just would not meet Realitiy.
But it's not my Baby, after all, I just use it, and keep it, for the foreseeable future, because it best meets my needs, skills and expectations! So much to this!
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Anyway, your default OC v.1.5.6.x Theme can be made responsive, very very basically, at least, if you download the Mod linked below, and just upload it's
stylesheet.css File into the Stylesheet Sub, after renaming the Original! But without at least resizing the images, and other Sections, it won't look very swell:
https://www.opencart.com/index.php?rout ... n_id=12478
But It would be hard work, to make the default Theme really looking good.
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A much better free UPLOAD Bootstrap Solution would be, to install this very interesting nice and free Bootstrap-Theme, linked below, I use it at present, in a partially just slightly modified form here at
http://www.hitline.info/
OC Bootstrap - Opencart Bootstrap 3 Theme - Front End
https://www.opencart.com/index.php?rout ... n_id=14631
It's NOT exactly like OC-2 Style default Theme Coding, still, it's a
very well done free Alternative to replace a formerly default looking Theme.
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yoocarter offers a whole range of easy to install free responsive Themes:
http://www.yoocart.net/
also
panforest.net
https://www.opencart.com/index.php?rout ... forest.net
Contrary to MOST other responsive themes, they not no require additional Systems files, to be added into the source, or even replace existing source files, to make 'em work.
Their CSS has to be a little reworked, in some sections, but then, some of those themes look really good!
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Another responsive OC v.1.5.6 Version default like Theme can be found here:
https://github.com/johnjyin/Opencart-De ... ive-Theme/
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A real OC-2 Theme Solution would be, to buy
PM-Netti's OC-2 Theme. You also get an
OcMod Install included, just to mention this !
Oc2 Theme to version 1.5 see it here in action:
http://www.velomech.ch/
https://www.opencart.com/index.php?rout ... n_id=23641
Peku also offers a full Size latest release OC v.1.5.6.5(rc) with a built-in
Oc-2 Theme and
OcMod installed as DEFAULT.
OpenCart 1.5.6.5 Edge
https://www.opencart.com/index.php?rout ... n_id=27779
And, good to know, the OcMod could easy be switched off, if not needed!
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Or then, the simple responsive
OpenShop Theme could be used, seen here:
http://www.bigmax.ch/
http://www.openshop.li/downloads/OpenShop_Theme.zip
it does no change anything, and it can be used with or without the extended Admin Settings (background/admin logo, e.t.c.) VqMod included.
I would advise you to test this theme first, it's rather easy to handle and adapt, if you need something in a little different way, but all based on default OC basics.
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I also use a russian OC-2 styled Theme Test Version,
http://www.gratis-anzeiger.com/ , but it's a little more complicated, to make it work with the 'western' 1.5.6.5_rc Version, due to some built-in extensions and variables, not used in the default OC source. And russian is hard to learn, too, just because of a bloody OC-Theme...
But this one does not support OcMod as well, by Default, just to note it !
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I would copy the default DB, by use of the MyPHP Server Admin Tool, and place a copied Shop Software in another SUB, reconfigure the config.php files and .htaccess rewrite, then, test the Stuff, and find out, what matches best. It will be some work, to do, until everything looks top, but it's worth the Task !
Good Luck
Ernie