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HTML 

              
                <section data-ng-controller="FlexboxCtrl as $ctrl" class="container-fluid">
  <header class="m-header text-center">
    <h2>Children - <code>flex-grow</code></h2>
    <p class="h3">Edit or remove the elements by clicking them or add a few more bellow the wrapper</p>
  </header>
  
  <!-- Wrapper -->
  <div class="col-md-offset-3 col-md-6 col-xs-12">   
    <ul class="sample-wrapper list-unstyled">
      <li ng-repeat="elem in $ctrl.elements track by $index"
           tabindex="0"
           class="element u-clickable" 
           style="
                  -webkit-flex-grow: {{elem.grow}};
                  -ms-flex-grow: {{elem.grow}};
                  flex-grow: {{elem.grow}};
                  
                  -webkit-flex-shrink: {{elem.shrink}};
                  -ms-flex-shrink: {{elem.shrink}};
                  flex-shrink: {{elem.shrink}};
                  
                  -webkit-flex-basis: {{elem.basis}};
                  -ms-flex-basis: {{elem.basis}};
                  flex-basis: {{elem.basis}};
                  
                  height: {{elem.height}};
                  
                  -webkit-order: {{elem.order}};
                  -ms-order: {{elem.order}};
                  order: {{elem.order}};
                  
                  -webkit-align-self: {{elem.alignSelf.name}};
                  -ms-align-self: {{elem.alignSelf.name}};
                  align-self: {{elem.alignSelf.name}};
           "
           uib-popover-template="$ctrl.popover.templateUrl"
           popover-title="{{$ctrl.popover.title}}"
           popover-placement="auto"
           popover-trigger="'outsideClick'"
           ></li>
    </ul>
    <button class="btn btn-success btn-block" ng-click="$ctrl.addElement()" ng-show="$ctrl.elements.length < 10 || !!$ctrl.infiniteItems"><i class="glyphicon glyphicon-plus"></i></button>
    <div ng-show="$ctrl.elements.length >= 10 || !!$ctrl.infiniteItems" class="alert alert-warning alert-dismissible" role="alert">
      <p><strong>Ups!</strong> You have reached the limit of 10 elements.</p>
      <p ng-click="$ctrl.infiniteItems = !$ctrl.infiniteItems" class="u-clickable">
        <span class="u-checkbox" ng-class="{'active': $ctrl.infiniteItems}">
          <i class="fa fa-check"></i>
        </span>
        I don't care I want to add more
      </p>
    </div>

  </div>
</section>

<script type="text/ng-template" id="popover.html">
  <div class="form-group">
  	<label>
      flex-grow
      <input type="number" min="0" class="form-control inpu-sm" ng-model="elem.grow">
    </label>
    <hr>
    <button class="btn btn-danger btn-block" ng-click="$ctrl.removeElement($index)"><i class="glyphicon glyphicon-trash"></i></button>
  </div>
</script>
!

CSS 

              
                $blue: #3863A0;
$green: #3DBE8B;

/**
 * Refactors
 */
.rzslider .rz-pointer {
  background-color: $blue;
  &:focus{
    outline: none;
    box-shadow: none;
    background-color: $green;
    &:after{
      background-color: $blue;
    }
  }
}
.rzslider .rz-selection {
  background-color: darken($green, 10%);
}

.btn-primary {
  background-color: $green!important;
  border-color: darken($green, 10%)!important;
  &.active{
    background-color: $blue!important;
    border-color: darken($blue, 10%)!important;
  }
}

.btn-success {
  background-color: $green!important;
  border-color: darken($green, 10%)!important;
  margin-bottom: 20px;
}

.popover{
  .form-group{
      padding: 10px;
      label{
        display: block;
      }
    }
}

/**
 * Utilities
 */
.u-clickable{
  cursor: pointer;
  user-select: none;
}
.u-checkbox{
  display: inline-block;
  width: 20px;
  height: 20px;
  border: solid 1px #a9a9a9;
  background-color: white;
  border-radius: 2px;
  text-align: center;
  margin-right: 10px;
  .fa{
    opacity: 0;
    color: $green;
    transition: all 400ms linear;
  }
  &.active{
    .fa{
      opacity: 1;
    }
  }
}


/**
 * Modules
 */
.m-header{
  margin-bottom: 30px;
}
.m-menu{
  li{
    border-bottom: solid 1px lightgray;
    padding-bottom: 20px;
  }
}

.sample-wrapper{
  border: dashed 4px #A9A9A9;
  transition: all 400ms linear;
  counter-reset: elements;
  margin-bottom: 20px;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  
  
  .element {
    color: white;
    text-align: center;
    &:focus{
      box-shadow: 0 0 0px 4px white, 0 0 0px 8px orange;
      outline: none;
    }
    
    @for $i from 1 to 11{
      &:nth-of-type(#{$i}n){
        
        margin: 15px;
        @if $i < 6 {
          $darken: $i * 5% - 5;
          background: darken($blue, $darken);
        } @else {
          $j: $i - 5;
          $darken: $j * 5% - 5;
          background: darken($green, $darken);
        }
      }
    }
    &:before{
      counter-increment: elements;
      content: counter(elements);
      display:block;
      margin: 5px;
    }
  }
}
!

JS 

              
                (function(angular){
  'use strict';
  
  // Define app and elements
  angular.module("flexbox", ['ngSanitize','ui.bootstrap'])
    // Flexbox controller (called from the component)
    .controller('FlexboxCtrl', FlexboxCtrl);

  // Dependencies injections
  FlexboxCtrl.$inject = ['$uibModal', '$document'];

  // Flexbox controller (hoists)
  function FlexboxCtrl($uibModal, $document){
    var $ctrl = this,
        Element = El;
    
    $ctrl.minHeight = 707;
    
    $ctrl.maxWidth = 1920;
    
    $ctrl.infiniteItems = false;
    
    /**
     * Wrapper config
     */
    
    // Display
    $ctrl.display = 'flex';    
    // Direction
    $ctrl.direction = 'row';    
    // Wrap
    $ctrl.wrap = 'nowrap';
    // Justify content
    $ctrl.justifyContent = 'flex-start';
    // Align items
    $ctrl.alignItems = 'stretch';
    // Align content
    $ctrl.alignContent = 'stretch';
    
    
    /**
     * Wrapper children (elements)
     */
    $ctrl.popover = {
      templateUrl: 'popover.html',
      title: 'Element config'
    };
    
    $ctrl.elements = [
      new Element(),
      new Element(),
      new Element()     
    ];
    
    $ctrl.removeElement = removeElement;
    $ctrl.addElement = addElement;
    $ctrl.editElement = editElement;
    
    function El (){
      this.alignOptions = [
        {id: 0, name: "none"},
        {id: 1, name: "flex-start"},
        {id: 2, name: "flex-end"},
        {id: 3, name: "center"},
        {id: 4, name: "stretch"},
        {id: 5, name: "baseline"}
      ];
      
      this.grow = 0;
      this.shrink = 1;
      this.basis = '100px';
      this.height = 'auto';
      this.order = 0;        
      this.alignSelf = this.alignOptions[0];
    }
    
    function removeElement(index){
      $ctrl.elements.splice(index, 1);
      console.log($ctrl.elements.length);
    }
    
    function addElement(){
      console.log($ctrl.elements);
      $ctrl.elements.push(new Element());
    }
    
    function editElement(el, index){      
      $uibModal.open({
        animation: true,
        templateUrl: 'modal.html',
        size: 'sm',
        controllerAs: '$ctrl',
        controller: function(){
          console.log(el);
        }
      });
    }
  
  }
  
  // Run app
  angular.bootstrap(document, ['flexbox']);
})(angular)
!
999px

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