border-left CSSプロパティで左側の境界線のスタイルを指定する
CSS Borders, Padding & Margins | HTML Goodies
html - CSS how to make a perfectly alligned left (or right) border? - Stack Overflow
CSS border-left Property
Right-to-left Styling
CSS border-left
CSS border-left-style Property - server2client.com
CSS How to: border-left - YouTube
CSS Box Model
Box model
CSS Borders | Border in CSS | Scaler Topics
CSS Border | o7planning.org
Bootstrap Border | o7planning.org
CSS свойство border-left-style | назначение, допустимые значения, примеры
CSS Box Model explained
37 Contemporary Style CSS Border Animation Effects In 2022 - uiCookies
CSS box model - Wikipedia
border-inline | CSS-Tricks - CSS-Tricks
CSS border-left-style Property
CSS border-left-width Property
Pens tagged 'border-left' on CodePen
border-top-left-radius | Codrops
CSS border-left-style Property
