Blog width change

If you’re not using a Child Theme, and if the theme doesn’t have a designated section of the dashboard for CSS modifications then install this Custom CSS Manager plugin https://www.ads-software.com/plugins/custom-css-manager-plugin

Then use its “CSS Code” section of the dashboard to hold your CSS modifications:

Alternatively use your Child Theme style.css file to hold your CSS modifications:

#wrapper {
    width: 100%;
}

#content {
    width: 70%;
}

site address https://www.entertolearn.com
image url is https://tinypic.com/view.php?pic=28hzdxj&s=8#.VAM8kcWSwXg

Thanks I have change wrapper to 1000px and content 700px and slider 300px but it’s change my blog structure. everything showing wrong not poper manage. visit my link to see detail.

Thanks sir, it’s working but still remain some spaces.
wrapper size to 1000px?
should be 1200px instead of 1000px to over ride remaining spaces.?