New Page, remove sidebar

Hi There,

I am trying to create a new page, however it is always displaying recent posts, categories and archive. Is there a way to remove this sidebar and have a full width page?
Is this also possible with the posts page? i have tried the code from here

however it doesn’t seem to work.

Many Thanks

Hello Lyle,

Try this CSS code, but keep in mind that this might come with some incompatibilities so please keep an eye after any malfunction:

.container .row .col-sm-7{
    width: 100%;
.container .row .col-sm-4{
    display: none;

Best regards