Create a border gradient for each of the 4 borders

Question

I want to create the same linear gradient for each border.

The border gradient with 5 colors starts from

transparent to white to bla         


        

Answer 1

You could also do this with multiple linear-gradients as backgrounds and position them as required like in the below snippet.

To change the size/width of the border, modify the 20px value in the background-size. (Note: Depending on the desired output, you may have to change the linear-gradient percentages also when you change the size. But that should be reasonably straight-forward to do.)

background-size: 100% 20px, 100% 20px, 20px 100%, 20px 100%;

Gradients on the whole have no support in IE 9 but should work in IE 10+. Border-image on the other hand works only from IE 11 upwards.

.border-image {
  height: 200px;
  width: 200px;
  background: -webkit-linear-gradient(0deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), -webkit-linear-gradient(0deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), -webkit-linear-gradient(90deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), -webkit-linear-gradient(90deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%);
  background: -moz-linear-gradient(0deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), -moz-linear-gradient(0deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), -moz-linear-gradient(90deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), -moz-linear-gradient(90deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%);
  background: linear-gradient(90deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), linear-gradient(90deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), linear-gradient(0deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%), linear-gradient(0deg, transparent 10%, white 10%, black 50%, white 90%, transparent 90%);
  background-repeat: no-repeat, no-repeat, no-repeat, no-repeat;
  background-size: 100% 20px, 100% 20px, 20px 100%, 20px 100%;
  background-position: 0px 0px, 0px 100%, 0px 0px, 100% 0px;
  padding: 20px;
}

Some Test Content