How do I resize the border of the body as the window resizes in CSS

Tags: html,css,resize,border

Problem :

I just recently finished my site.

If you visit it real quick, you will notice the green border on the right, to add a little readability. If you shrink the window however, you can see it just ends up covering everything. It looks equally absurd on a mobile device screen too. How do I make it so it resizes?

body {
  color: #325050;
  background: #fff;
  font-family: 'Libre Baskerville', sans-serif;
  font-size: 80%;
  border-right: 50em solid;

Here's the body portion of my CSS file.

Solution :

Try it like this:

body {
  color: #325050;
  background: #fff;
  font-family: 'Libre Baskerville', sans-serif;
  font-size: 80%;
  border-right: 50vw solid; /* changed*/

1vw = 1% of viewport width

1vh = 1% of viewport height

These measurements give you a nice way to define width and height of things like border in percentages.

For sizing things relative to the current viewport size you can find out more here

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