Stuck between flex-end and space-between and margin

Question

In a flexbox, when I use justify-content:space-between the first and last items are exactly aligned to the bounds of flex container where space is divided between them. How can I align first item to the right where other items are also aligned to the right (not to entire the width)?

The sample code below is not good because when I use flex-end, I have to set margin for items and so the first one in each row is not sticky to the right.

#flexcontainer{
  display: -webkit-flex;
  display: flex;
  flex-wrap:wrap;
  -webkit-flex-direction: row;
  flex-direction: row;
  -webkit-justify-content: flex-end;
  justify-content: flex-end;
  background:#ff8800;
}


.flexitem{
	display: -webkit-flex;
	display: flex;
	margin:20px;
	width:24%;
	background:#666666;
	box-sizing:border-box;
    height:50px;

}

<div id="flexcontainer">
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
</div>

and this is not also good because items are not aligned to the right (but entire the width):

#flexcontainer{
  display: -webkit-flex;
  display: flex;
  flex-wrap:wrap;
  -webkit-flex-direction: row;
  flex-direction: row;
  -webkit-justify-content: space-between;
  justify-content: space-between;
  background:#ff8800;

}


.flexitem{
	display: -webkit-flex;
	display: flex;
	margin:0;
	width:24%;
	background:#888888;
	box-sizing:border-box;
    height:50px;
}

<div id="flexcontainer">
    <div class="flexitem"></div>
    <div class="flexitem"></div>
    <div class="flexitem"></div>
  </div>

My desired output in image (first one sticks to the right with no margin-right and the 4th one sticks to the left if 4 element exist and others align to the right if more than 4):

Answer 1

AFAIK the best you can achieve using a flexbox to achieve your desired output can be done manipulating the flex-basis and margin of the flexitems using this:

  margin: 20px;
  display: flex;
  flex: 0 1 calc(25% - 40px);

1. The flex-basis of calc(25% - 40px) in the flex style divides the width into four adjusting for margin also.

2. Note I have set flex-grow disabled.

3. flex-end finishes it up.

Let me know your feedback. Thanks!

#flexcontainer {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  justify-content: flex-end;
  background: #ff8800;
}
.flexitem {
  margin: 20px;
  display: flex;
  flex: 0 1 calc(25% - 40px);
  background: #666666;
  box-sizing: border-box;
  height: 50px;
}

<div id="flexcontainer">
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
</div>

EDIT:

So I did some more adjustments to the margin calculations:

1. Change the flex-basis by reducing 10px more to adjust for removing the 20px each at the left and right ends of a row:

   flex: 0 1 calc(25% - 30px);
   

2. For the rightmost / leftmost boxes to sit to the right / left edge:

   .flexitem:nth-child(4n) {
     margin-right: 0;
   }
   .flexitem:nth-child(4n + 1) {
     margin-left: 0;
   }
   .flexitem:last-child {
     margin-right: 0;
   }
   

Give me your feedback on this. Thanks!

#flexcontainer {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  justify-content: flex-end;
  background: #ff8800;
}
.flexitem {
  margin: 20px;
  display: flex;
  flex: 0 1 calc(25% - 30px);
  background: #666666;
  box-sizing: border-box;
  height: 50px;
}
.flexitem:nth-child(4n) {
  margin-right: 0;
}
.flexitem:nth-child(4n + 1) {
  margin-left: 0;
}
.flexitem:last-child {
  margin-right: 0;
}

<div id="flexcontainer">
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
</div>

Answer 2

I guess you could simply remove the right margin in your first example, is this how you wanted it to look?

#flexcontainer {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  justify-content: flex-end;
  background: #ff8800;
}


.flexitem {
  margin: 20px;
  margin-right: 0;
  width: 24%;
  background: #666666;
  box-sizing: border-box;
  height: 50px;
}

<div id="flexcontainer">
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
  <div class="flexitem"></div>
</div>