Web Front-End-border features, web-border features

Web Front-End-border features, web-border features

1. What is the shape of the border?

You may think it is a rectangle that is very careful and may be called a trapezoid or a triangle.

The reasonable answer is non-rectangular

2. Draw triangles

Set the width and height of the div to 0px.

Set the border color to white.

Then you can set the border color of the triangle in the opposite direction.

For example: border-left-color: gold; this is a triangle toward the right.