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

Instead of setting the flex to one, you can set the flex-basis to 20% and then the width will be divided equally:

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

.container .block {
  height: 28px;
  flex-basis: 20%;
  border: 1px solid black;
  box-sizing: border-box;
}

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

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