xrpl-dev-portal/styles/_code-walkthrough.scss

#app_root article .code-walkthrough {
    margin-right: 112px;
    max-width: calc(100% - 112px);
    padding-right: 0;
    grid-template-columns: 5fr 5fr;

    @media screen and (max-width: 990px) {
        margin-right: 96px;
        max-width: calc(100% - 96px);
    }

    // Wide screens - increase available space
    @media screen and (min-width: 1600px) {
        [data-component-name="Markdoc/CodeWalkthrough/CodeFilters"] {
            margin-left: 96px;
            max-width: calc(100% - 96px);
        }

        [class*="CodeWalkthrough__ContentWrapper"] {
            margin-left: 96px;
            max-width: calc(100% - 200px);
        }
    }

    .tag-size-large {
        margin: 0 var(--spacing-xs);

        > div {
            padding: 2px 4px;
        }
    }

    [data-component-name="Markdoc/CodeWalkthrough/CodeFilters"] {
        padding: var(--spacing-xs) var(--spacing-lg);

        > :first-child > :first-child {
            margin: auto;
        }
    }

    [data-component-name="Markdoc/CodeWalkthrough/CodePanel"] {
        top: var(--navbar-height);
        border: 0;

        [data-component-name="CodeBlock/CodeBlockContainer"] {
            border-top-left-radius: 0;
            border-top-right-radius: 0;
        }
    }

    > :first-child > div {
        border-radius: var(--border-radius-md);
    }
    [data-component-name="Markdoc/CodeWalkthrough/CodeFilters"] {
        background-color: var(--code-panel-bg-color);
    }

    [data-line-number]::before {
        padding-left: 0.8em;
    }
}