full width elementor on sider site

hello, how to make this bigger https://prnt.sc/12genlv
from 200px to 230px

You have this CSS somewhere on your site.

@media (min-width: 769px)
.site-header {
    position: fixed;
    left: 0;
    top: 0;
    width: 200px;
    z-index: 300;
    height: 100%;
    overflow: auto;
    overflow-x: hidden;
    -webkit-backface-visibility: hidden;
    -webkit-overflow-scrolling: touch;
    transition: .1s ease;
}

In this CSS, adjust width: 200px; to 230px.