Set the width of children to fill the parent

Question

I want the children of the div fill its width.

now am using a code like this:

Answer 1

You can use flexbox to achieve this.

The demo below shows how it works with more child nodes and also with nodes with zero height.

I have also changed the margin property for the child items to work properly with flexbox.

.parent {
  width: 100%;
  display: inline-flex; /*used inline-flex here, to mirrior your inline-block setting, but you can use flex*/
  height: 120px;
  background: #000;
  padding: 10px;
  box-sizing: border-box;
}

.child {
  display: inline-flex;
  flex-grow: 1;
  margin: 0 1%;
  height: 100px;
  background: #ffffd;
}

/*demontration for zero-height child elements*/
.child:nth-child(2) {
  height: 0;
}