how to apply full width pages

[Yesim]

http://tranquilityintentionalhealth.com/contact/

how do you add full width pages for may pages. They look so much disorganized.
Please help.

[Towfiq I.]

Open up style.css and replace this:

/*FULL WIDTH PAGE*/
.theron_fullwdth_body .single_post{ width:940px !important;}
.theron_fullwdth_body #content .single_wrap{ width:1000px;}

.theron_fullwdth_body .commentlist{width:100%;}
.theron_fullwdth_body #commentform, .thn_fullwdth_body #newslider{ width:970px;}
.theron_fullwdth_body .comment-form-comment textarea{width: 570px;}
.theron_fullwdth_body .comment-form-comment{width: 600px;}
.theron_fullwdth_body .field_wrap{width: 340px;}
.theron_fullwdth_body .comment-form-author input, .thn_fullwdth_body .comment-form-email input, .thn_fullwdth_body .comment-form-url input{width: 263px;}
.theron_fullwdth_body .org_comment{ width:97%;}
.theron_fullwdth_body .single_post .post img, .thn_fullwdth_body .type-page img, .thn_fullwdth_body .type-attachment img{ max-width:940px; height:auto;}
.theron_fullwdth_body .post_foot{width:1000px;}
.theron_fullwdth_body .share_this{width:960px;}

with this:

/*FULL WIDTH PAGE*/
.theron_fullwdth_body .single_post{ width:90% !important;}
.theron_fullwdth_body #content .single_wrap{ width:100%;}

.theron_fullwdth_body .commentlist{width:100%;}
.theron_fullwdth_body #commentform, .thn_fullwdth_body #newslider{ width:96%;}
.theron_fullwdth_body .comment-form-comment textarea{width: 90%;}
.theron_fullwdth_body .comment-form-comment{width: 50%;}
.theron_fullwdth_body .field_wrap{width: 50%;}
.theron_fullwdth_body .comment-form-author input, .thn_fullwdth_body .comment-form-email input, .thn_fullwdth_body .comment-form-url input{width: 50%;}
.theron_fullwdth_body .org_comment{ width:97%;}
.theron_fullwdth_body .single_post .post img, .thn_fullwdth_body .type-page img, .thn_fullwdth_body .type-attachment img{ max-width:100%; height:auto;}

[YESIM]

MANY THANKS FOR YOUR QUICK HELP!!!!!