Edit File: default-editor-styles.min.css
:root{--wp-admin-theme-color:#007cba;--wp-admin-theme-color--rgb:0,124,186;--wp-admin-theme-color-darker-10:#006ba1;--wp-admin-theme-color-darker-10--rgb:0,107,161;--wp-admin-theme-color-darker-20:#005a87;--wp-admin-theme-color-darker-20--rgb:0,90,135;--wp-admin-border-width-focus:2px;--wp-block-synced-color:#7a00df;--wp-block-synced-color--rgb:122,0,223;--wp-bound-block-color:var(--wp-block-synced-color)}@media (min-resolution:192dpi){:root{--wp-admin-border-width-focus:1.5px}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen-Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:18px;line-height:1.5;--wp--style--block-gap:2em}p{line-height:1.8}.editor-post-title__block{font-size:2.5em;font-weight:800;margin-bottom:1em;margin-top:2em}