centering homepage content

Dear Sir,
I tied to center the homepage content
but i am not able to.
I tried adding css style at Additional CSS page:
body{
margin: 0 auto;
align: center;
text-align: center;
background: white;
}

.tablepress-id-10 {
width: auto;
margin: 0 auto 1em;
}

.site {
background-color: white;
align: center;
text-align: center;
margin-right: auto;
margin-left: auto;
}

.site-content {
align: center;
margin-right: auto;
margin-left: auto;
}

.content-area {
align: center;
margin-right: auto;
margin-left: auto;
}

.site-branding,
.site-logo,
.site-header {
background-color: #fff;
align: center;
margin-right: 0;
margin-left: 0;
}

.tablepress-id-10 img {
max-width: 100%;
}

Tried to align the header, menus, site content, body, content area to center but that’s also not working.

I tried center table using <center>….</center> tag but not working too.

Please help ASAP.

The page I need help with: [log in to see the link]