Equal width using flex and border-box

Question

I am using box-sizing: border-box; with varying border thicknesses within a flexbox. I want the elements within the flexbox to have equal widths, b

Answer 1

One way could be setting a 2px padding to the .block and removing it for .selected

.container {
  display: flex;
  flex-direction: row;
  align-items: center;
  width: 100px;
}

.container .block {
  height: 28px;
  flex: 1;
  border: 1px solid black;
  box-sizing: border-box;
  padding: 2px;
}

.container .block.selected {
  border: 3px solid blue;
  padding: 0px;
}

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