2014 Child Theme Full width problems

So I would like to keep the back ground, but adjust the slider to fit the full width of the area have the images in the slider all show up the same.
I would like the sidebar and content to take up the full width as well. I have put in CSS that is below the site address. Can anyone help me?
http://julietbuttersdoty.com

#t_image {
width: 100%
}
/*this center aligns site */

.site {
margin: 0 auto;
}

/*end center align code */
/* span featured images full-width of content */

.post-thumbnail img {
width: 100%;
}

/* end span featured image code */
/* adjust padding between top of content and header 72px default */

.content-area, .content-sidebar {
padding-top: 72px;
}

/* end adjust padding between top of content & header */

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/* Content max-width adjust 630px as needed (default 474px) */

.site-content .entry-header,
.site-content .entry-content,
.site-content .entry-summary,
.site-content .entry-meta,
.page-content {
margin: 0 auto;
max-width: 630px;}

/* End of max-width code */​