Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <div class="demo-wrapper">  
  <div class="grid-controls">
    
    <section class="grid-controls__header">
      <h3>Grid Container Controls</h3>
      <button class="btn toggle-view">Switch Controls</button>
      <button class="btn toggle-controls">Toggle View</button>
      <button class="btn clear-fields">Clear Fields</button>
    </section>
    
    <section class="controls--wrapper">
        
      <div class="grid-controls--container">

        <!--   GRID TEMPLATE COLUMNS   -->
        <section class="grid-controls__body">
      
        <div class="control--multiple-fields multiple-cols">
          <p>Set values for the Grid container by individual fields. For more advanced controls, click 'Switch Controls'.</p>
          <hr />
          <p>Grid Template Columns:</p>

          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc">Column 1: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="col-input-1" placeholder="1" min="1"/>

              <select name="" id="col-sel-1">
                <option value="fr">fr</option>
                <option value="px">px</option>
                <option value="%">%</option>
                <option value="auto">auto</option>
              </select>

            </div>
          </div>

          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc2">Column 2: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="col-input-2" placeholder="150" min="1"/>

              <select name="" id="col-sel-2">
                <option value="fr">fr</option>
                <option value="px" selected>px</option>
                <option value="%">%</option>
                <option value="auto">auto</option>
              </select>

            </div>
          </div>

          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc">Column 3: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="col-input-3" name="gtc" placeholder="1" min="1"/>

              <select name="" id="col-sel-3">
                <option value="fr">fr</option>
                <option value="px">px</option>
                <option value="%">%</option>
                <option value="auto">auto</option>
              </select>

            </div>
          </div>

        </div> 
      
        <!--  GRID CONTAINER SINGLE INPUTS VIEW  -->
        <div class="control--single-input single-input">
          <p>Set values for the Grid container by property. <br />
            To change grid-item values, click 'Toggle View'.</p>
          <hr />
          <p>Grid Container</p> 
          <div class="code-example">
            <div class="codebox">
              <span class="selector-name">.grid-container <span class="bracket">{</span></span><br />
              <div class="single-input-wrapper">
                <span class="prop-name">grid-template-columns:</span>
                <span class="value">
                  <input class="grid-single-input" id="col-single-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-auto-columns:</span>
                <span class="value">
                  <input class="grid-single-input" id="auto-col-single-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-template-rows:</span>
                <span class="value">
                  <input class="grid-single-input" id="row-single-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-auto-rows:</span>
                <span class="value">
                  <input class="grid-single-input" id="auto-row-single-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-auto-flow:</span>
                <span class="value">
                  <input class="grid-single-input" id="auto-flow-single-input" />
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-gap:</span>
                <span class="value">
                  <input class="grid-single-input" id="gap-single-input" />
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-template-areas:</span>
                <span class="value">
                  <textarea class="grid-single-input" id="areas-single-input" rows='5'>
                  </textarea>
                </span>
              </div>
              <span class="bracket bracket--close"> }</span>
              <br />
            </div>
          </div>
        </div>

          
        </section>
        <hr class='seperator' />
        
        <!--   GRID TEMPLATE ROWS   -->
        <section class="grid-controls__body">
        <div class="control--multiple-fields multiple-rows">
          <p>Grid Template Rows:</p>

          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc">Row 1: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="row-input-1" placeholder="120" min="1"/>

              <select name="" id="row-sel-1">
                <option value="fr">fr</option>
                <option value="px" selected>px</option>
                <option value="%">%</option>
                <option value="auto">auto</option>
              </select>

            </div>
          </div>

          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc">Row 2: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="row-input-2" placeholder="100" min="1"/>

              <select name="" id="row-sel-2">
                <option value="fr">fr</option>
                <option value="px" selected>px</option>
                <option value="%">%</option>
                <option value="auto">auto</option>
              </select>

            </div>
          </div>

        </div>
          
        </section>

        <hr class='seperator' />
        
        <!--   GRID GAP   -->
        <section class="grid-controls__body">
        <div class="control--multiple-fields multiple-gaps">
          
          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc">Grid Row Gap: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="gap-row-input"  placeholder="5" min="0"/>

              <select name="" id="gap-row-sel">
                <option value="px" selected>px</option>
                <option value="%">%</option>
              </select>

            </div>
          </div>
          
          <div class="controls__row">
            <div class="controls__row--title">
              <label for="gtc">Grid Column Gap: </label>
            </div>
            <div class="controls__row--area">
              <input type="text" id="gap-col-input" placeholder="5" min="0"/>

              <select name="" id="gap-col-sel">
                <option value="px" selected>px</option>
                <option value="%">%</option>
              </select>

            </div>
          </div>

          
        </div> <!-- End Multiple Fields -->

        </section>
        
        <hr class='seperator' />

        <!-- JUSTIFY ITEMS -->
        <section class="grid-controls__body">

          <div class="controls__row">
            <div class="controls__row--title">
              <label>Justify Items:</label>
            </div>
            <div class="controls__row--area controls__row--stretch">

              <select name="" id="justify-items-sel">
                <option value="stretch" selected>stretch</option>
                <option value="start">start</option>
                <option value="center">center</option>
                <option value="end">end</option>
              </select>

            </div>
          </div>

           <!--   ALIGN ITEMS    -->
          <div class="controls__row">
            <div class="controls__row--title">
              <label>Align Items:</label>
            </div>
            <div class="controls__row--area controls__row--stretch">

              <select name="" id="align-items-sel">
                <option value="stretch" selected>stretch</option>
                <option value="start">start</option>
                <option value="center">center</option>
                <option value="end">end</option>
              </select>

            </div>
          </div>
        
          <!--   JUSTIFY CONTENT   -->
          <div class="controls__row">
            <div class="controls__row--title">
              <label>Justify Content:</label>
            </div>
            <div class="controls__row--area controls__row--stretch">

              <select name="" id="justify-content-sel">
                <option value="start">start</option>
                <option value="center">center</option>
                <option value="end">end</option>
                <option value="stretch">stretch</option>
                <option value="space-around">space-around</option>
                <option value="space-between">space-between</option>
                <option value="space-evenly">space-evenly</option>
              </select>

            </div>
          </div>

          <!--   ALIGN CONTENT   -->
          <div class="controls__row">
            <div class="controls__row--title">
              <label>Align Content:</label>
            </div>
            <div class="controls__row--area controls__row--stretch">

              <select name="" id="align-content-sel">
                <option value="start">start</option>
                <option value="center">center</option>
                <option value="end">end</option>
                <option value="stretch">stretch</option>
                <option value="space-around">space-around</option>
                <option value="space-between">space-between</option>
                <option value="space-evenly">space-evenly</option>
              </select>

            </div>
          </div>
        
        </section>

      </div> <!-- End Grid Container Controls -->

      <!--  GRID ITEM INPUTS VIEW  -->
      <div class="grid-controls--items">
        <div class="control--single-item grid-items">
          <p>Set values for the individual Grid Items. Click on an Item to target its values and the selector will update.</p>
          <hr />
          <p>Grid Items</p> 
          
          <div class="code-example">
            <div class="codebox">
              <span class="selector-name" id="grid-item--dynamic">.grid__item-1</span> <span class="bracket"> {</span><br />
              <div class="single-input-wrapper">
                <span class="prop-name">grid-column:</span>
                <span class="value">
                  <input class="grid-item-input" id="column-item-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-row:</span>
                <span class="value">
                  <input class="grid-item-input" id="row-item-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">grid-area:</span>
                <span class="value">
                  <input class="grid-item-input" id="grid-area-input"/>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">justify-self:</span>
                <span class="value">
                  <select name="" class='grid-item-input' id="justify-self-sel">
                    <option value="stretch" selected>stretch</option>
                    <option value="start">start</option>
                    <option value="center">center</option>
                    <option value="end">end</option>
                  </select>
                </span>
              </div>
              
              <div class="single-input-wrapper">
                <span class="prop-name">align-self:</span>
                <span class="value">
                  <select name="" class='grid-item-input' id="align-self-sel">
                    <option value="stretch" selected>stretch</option>
                    <option value="start">start</option>
                    <option value="center">center</option>
                    <option value="end">end</option>
                  </select>
                </span>
              </div>
              <span class="bracket bracket--close"> }</span>
              
          </div>
      </div>


    </section>
    
    
  </div> <!-- End Grid Controls -->
  
  
  <div class="grid-container">
    <div class="grid__item" id="grid__item-1">1</div>
    <div class="grid__item" id="grid__item-2">2</div>
    <div class="grid__item" id="grid__item-3">3</div>
    <div class="grid__item" id="grid__item-4">4</div>
    <div class="grid__item" id="grid__item-5">5</div>
    <div class="grid__item" id="grid__item-6">6</div>
    <div class="grid__item" id="grid__item-7">7</div>
    <div class="grid__item" id="grid__item-8">8</div>
    <div class="grid__item" id="grid__item-9">9</div>
  </div>

</div>
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css?family=Titillium+Web');

$bg: #d3e9ee;
$c1: #f74444; // btn
$c2: #44a4f7; // items
$c3: #3b99ab; // controls
$gap-size: 5px;

.demo-wrapper {
  margin: 0 auto;
  padding: 15px;
  width: 100%;
  height: 100vh;
  overflow-y: auto;
  max-width: 1400px;
  display: flex;
  align-items: stretch;
}

.grid-controls {
  margin: 0 0 0 15px;
  width: 35%;
  flex: 0 1 auto;
  background: $c3;
  color: #fff;
  font-size: 1.1rem;
  border-radius: 3px;
  overflow-y: auto;
  overflow-x: hidden;
  
  h3 {
    margin: 0 auto 10px;
    letter-spacing: 0.5px;
    text-align: center;
  }
  
  p {
    margin: 0 0 6px;
    font-weight: bold;
  }
  
  &__header {
    padding: 8px;
  }
  
  &__body {
    display: grid;
  }
  
}
.controls--wrapper {
  height: auto;
  width: 100%;
  display: flex;
}
.grid-controls--container,
.grid-controls--items {
  padding: 8px 14px 8px 8px;
  flex: 0 0 100%;
  transform: translateX(0);
  transition: 0.3s ease-out;
  
  &.slide {
    transform: translateX(-100%);
  }
}
.controls__row {
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  &--area {
    display: flex;
  }
  &--stretch {
    flex-direction: row-reverse;
    flex: 1 1 auto;
    
    select {
      width: 100%;
      max-width: 260px;
    }
  }
}

// --------------------------------
// Switch between states
.control--single-input,
.control--multiple-fields {
  grid-area: 1 / 1;
}

.control--single-input {
  height: 0;
  visibility: hidden;
  opacity: 0;
  transition: all 0.2s;
  
  &.visible {
    height: auto;
    visibility: visible;
    opacity: 1;
    transition: all 0.2s;
  }
}

.control--multiple-fields {
  height: auto;
  visibility: visible;
  opacity: 1;
  transition: all 0.2s;
  
  &.hidden {
    height: 0;
    visibility: hidden;
    opacity: 0;
    transition: all 0.2s;
  }
}

// ----------------------------------------------
// Code example related:
.code-example {
  margin-bottom: 15px;
  background: #3f3f3f !important;
  border-radius: 3px;
}
.single-input-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.grid-single-input,
.grid-item-input {
  width: 100%;
  border-radius: 3px;
  font-size: 0.935rem;
}
.codebox {
  padding: 8px 0 12px;
  font-size: 0.935rem;
  span {
    font-family: monospace;
    
    &.selector-name {
      display: inline-block;
      padding-left: 6px;
      margin-bottom: 6px;
      color: #EC5f67;
    }
    &.prop-name {
      padding-left: 20px;
      color: #99C794;      
    }
    &.value {      
      max-width: 215px;
      flex: 1 1 auto;
      padding: 2px 5px;
      color: #C594C5;
    }

    &.bracket {
      color: #ccc;
      padding-left: 6px;
    }
  }
}
.grid-user-input {
  width: 120px;
  border-radius: 3px;
}

// Form elements
select,input { 
  font-family: 'Titillium Web';
  font-size: 1rem;
  background-color: #fff;
  border: 1px solid #dbdbdb;
  outline: 0;
  height: 30px;
}
input {
  padding-left: 6px;
  border-radius: 3px 0 0 3px;
}
label {
  margin-right: 10px;
}
select {
  line-height: 1.25;
  padding-right: .625em;
  position: relative;
  vertical-align: top;
  color: #363636;
  cursor: pointer;
  display: block;
}

.btn {
  padding: 2px 18px;
  height: 30px;
  font: {
    family: inherit;
    size: 0.938rem;
  }
  border: none;
  outline: none;
  cursor: pointer;
  background: $c1;
  color: #fff;
  border-radius: 0 3px 3px 0;
  transition: 0.2s;
  &:hover {
    background: darken($c1, 5%);
  }
  
  &--add-control-row {
    height: 34px;
    margin-top: 10px;
    align-self: flex-start;
    border-radius: 3px;
  }
}

.grid-container {
  margin: 0 15px;
  padding: $gap-size;
  overflow-x: hidden;
  width: calc(65% - 15px);
  flex: 1 1 auto;
  border: 1px solid $c3;
  display: grid;
  border-radius: 3px;
}
.grid__item {
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: $c2;
  color: #fff;
  font-size: 1.2rem;
  border-radius: 3px;
  cursor: pointer;
}




html { 
  box-sizing: border-box; 
}
*, *::before, *::after {
  box-sizing: inherit;
}
body {
  margin: 0;
  padding: 0;
  height: 100vh;
  background: $bg;
  font: {
    size: 16px;
    family: 'Titillium Web';
  }
}
.seperator {
  display: block;
  margin: 20px 0;
  background: #fff;
  height: 1px;
  width: 95%;
  
  &.hidden {
    display: none;
  }
}

::-webkit-scrollbar-track {
	-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
	border-radius: 2px;
	background-color: #F5F5F5;
}

::-webkit-scrollbar {
	width: 10px;
	background-color: #F5F5F5;
}
::-webkit-scrollbar-thumb {
	border-radius: 3px;
	-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);
	background-color: #555;
}
              
            
!

JS

              
                const gridContainer = document.querySelector('.grid-container');
const gridControls = document.querySelector('.grid-controls');
const gridSingleInputs = Array.from(document.getElementsByClassName('grid-single-input'));
const gridItemSingleInputs = Array.from(document.getElementsByClassName('grid-item-input'));
const clearButton = document.querySelector('.clear-fields');

// Attach event listeners to single inputs and parent of multiple fields.
function addListeners() {
  
  gridSingleInputs.forEach((input) => {
    input.addEventListener('blur', handleSingleFieldChange);
  });
  
  gridItemSingleInputs.forEach((input) => {
    if (input.id.includes('sel')) {
      input.addEventListener('change', handleSingleItemChange);
    } else {
      input.addEventListener('blur', handleSingleItemChange);
    };
  });
  
  gridControls.addEventListener('change', handleFieldsChange);
  gridContainer.addEventListener('click', getGridItem);
  clearButton.addEventListener('click', clearFields);
}


// Handle change on multiple fields view and call correct method to set vals.
function handleFieldsChange(e) {
  const control = e.target.id;

  if(control.startsWith('col')) {
    setGridTemplateProp(e.target, 'column');
  } else if (control.startsWith('row')) {
    setGridTemplateProp(e.target, 'row');
  } else if (control.startsWith('gap')) {
    setGridGap(e.target);
  } else if (control.startsWith('justify') || control.startsWith('align')) { 
    setItemAndContentAlignment(e.target);
  } 

}

// Container Single Field handler
function handleSingleFieldChange(e) {
  
  const inputValue = e.target.value.toLowerCase();
  const inputField = e.target.id;

  let propName;
  switch (inputField) {
    case 'col-single-input':
      propName = 'grid-template-columns';
      break;
    case 'auto-col-single-input':
      propName = 'grid-auto-columns';
      break;
    case 'row-single-input':
      propName = 'grid-template-rows';
      break;
    case 'auto-row-single-input':
      propName = 'grid-auto-rows';
      break;
    case 'auto-flow-single-input':
      propName = 'grid-auto-flow';
      break;
    case 'gap-single-input':
      propName = 'grid-gap';
      break;
    case 'areas-single-input':
      propName = 'grid-template-areas';
    default:
      break;
  }
  assignStyles(propName, inputValue);
  
}

// Single Item Event Handler
function handleSingleItemChange(e) {
  // Select which grid-item to manipulate by users click//id title
  const dynamicItemId = document.getElementById('grid-item--dynamic').textContent;
  const stripId = dynamicItemId.slice(1);
  const gridItem = document.getElementById(`${stripId}`);

  // Get fields user clicked on.
  const inputField = e.target.id;
  const selectField = document.getElementById(inputField);

  let inputValue;
  let propName;
  switch (inputField) {
    case 'column-item-input':
      inputValue = e.target.value.toLowerCase();
      propName = 'grid-column';
      break;
    case 'row-item-input':
      inputValue = e.target.value.toLowerCase();
      propName = 'grid-row';
      break;
    case 'grid-area-input':
      inputValue = e.target.value.toLowerCase();
      propName = 'grid-area';
      break;
    case 'justify-self-sel':
      inputValue = selectField.options[selectField.selectedIndex].value;
      propName = 'justify-self';
      break;
    case 'align-self-sel':
      inputValue = selectField.options[selectField.selectedIndex].value;
      propName = 'align-self';
      break;
    default:
      break;
  }
  assignStyles(propName, inputValue, gridItem);
  
}

function getGridItem(e) {
  const itemId = e.target.id;
  if (e.target && itemId.startsWith('grid__item')) {
    const gridItem = document.getElementById(e.target.id);
    const itemId = e.target.id;
    const itemHolder = document.getElementById('grid-item--dynamic');
    itemHolder.textContent = `.${itemId}`;
  }
}

// Handles assigning the user's styles to the Grid element (container / items)
function assignStyles(propName, valueString, gridElement = gridContainer) {
  Object.assign(gridElement.style, {
    [propName]: valueString
  });
}

// Set either grid-template-columns or grid-template-rows styles depending on argument passed.
function setGridTemplateProp(control, gridTemplateProp) {
  
  // Set some variables determined by if user has changed a grid-template column or row property
  const templateProp = (gridTemplateProp == 'column') ? 'col' : 'row';
  const propVal = `${templateProp}Val`;
  const propUnit = `${templateProp}Unit`;
  
  // Get all the fields from either row or columns to be able to loop over each one.
  const fieldsContainer = document.querySelector(`.multiple-${templateProp}s`);
  const templateControls = Array.from(fieldsContainer.getElementsByClassName('controls__row'));
  let propName = (gridTemplateProp == 'column') ? 'grid-template-columns' : 'grid-template-rows';

  let userInputValues = {};
  // Get input values from fields.
  for (let i = 0, j = templateControls.length; i < j; i++) {
    const selectOption = document.getElementById(`${templateProp}-sel-${i+1}`);
    Object.assign(userInputValues, {
      [propVal + (i+1)] : document.getElementById(`${templateProp}-input-${i+1}`).value,
      [propUnit + (i+1)] : selectOption.options[selectOption.selectedIndex].value,
    });
  }

  // If columnUnitN value is `auto`, set value to empty string
  Object.keys(userInputValues).forEach((key, i) => {
    if (userInputValues[key] == 'auto') {
      // get number from this columns key name to be able to set prev keys value to '';
      const controlId = `${propVal}${key.slice(key.length - 1)}`;
      userInputValues[controlId] = '';
    }
  })

  // Get current style of grid containers properties for grid template column/row.
  const currentStyle = (gridTemplateProp == 'column') ? gridContainer.style.gridTemplateColumns : gridContainer.style.gridTemplateRows;
  const currentValues = currentStyle.split(' ');

  // Set each column as a value string consisting of it's value and unit.
  let storeUserValues = {};
  for (let i = 0, j = (Object.keys(userInputValues).length / 2); i < j; i++) {
    storeUserValues[propVal + (i+1)] = `${userInputValues[propVal + (i+1)]}${userInputValues[propUnit + (i+1)]}`;
  }

  // get number off input id to determine which field user touched.
  const controlId = control.id.slice(control.id.length -1);

  // Update default value string definition to value user has supplied - index of column determined by controlId.
  Object.keys(storeUserValues).forEach((col) => {
    if (col.endsWith(controlId)) {
      currentValues[controlId - 1] = storeUserValues[col];
    }
  });
  // Use the updated values to pass on and update css property
  const valueString = currentValues.join(' ');
  assignStyles(propName, valueString);
}


function setGridGap(control) {
  
  const fieldsContainer = document.querySelector('.multiple-gaps');
  const templateControls = Array.from(fieldsContainer.getElementsByClassName('controls__row'));
  const propName = 'grid-gap';
  let userInputValues = {};

  // Get input values from fields.
  for (let i = 0, j = templateControls.length; i < j; i++) {
    const gapRowSel = document.getElementById(`gap-row-sel`);
    const gapColSel = document.getElementById(`gap-col-sel`);
    Object.assign(userInputValues, {
      [`rowGapVal`] : document.getElementById(`gap-row-input`).value,
      [`rowGapUnit`] : gapRowSel.options[gapRowSel.selectedIndex].value,
      [`colGapVal`] : document.getElementById(`gap-col-input`).value,
      [`colGapUnit`] : gapColSel.options[gapColSel.selectedIndex].value,
    });
  }

  // get default style of grid-gap (note: row comes before column for the shorthand).
  const currentStyle = gridContainer.style.gridGap;
  const currentValues = currentStyle.split(' ');
  
  // If user has entered fields, use those for gap values, otherwise use defaults.
  let rowGap = (userInputValues.rowGapVal !== '') ? userInputValues.rowGapVal : currentValues[0];
  let colGap = (userInputValues.colGapVal !== '') ? userInputValues.colGapVal : currentValues[1];
  
  // check if using the default values - remove unit abberviation at end
  rowGap = rowGap.replace(/px|%/,'');
  colGap = colGap.replace(/px|%/,'');
  
  // Set value and unit together in object
  const storeUserValues = {
    gridRowGap: `${rowGap}${userInputValues.rowGapUnit}`,
    gridColGap: `${colGap}${userInputValues.colGapUnit}`,
  };
  
  const valueString = `${storeUserValues.gridRowGap} ${storeUserValues.gridColGap}`;
  assignStyles(propName, valueString);
  
}

// Set Justify Items / Align Items propertys
function setItemAndContentAlignment(control) {
  
  const selectControl = document.getElementById(control.id);
  const selectedOption = selectControl.options[selectControl.selectedIndex].value;
  
  let propName;
  switch (control.id) {
    case 'justify-items-sel':
      propName = 'justify-items';
      break;
    case 'align-items-sel':
      propName = 'align-items';
      break;
    case 'justify-content-sel':
      propName = 'justify-content';
      break;
    case 'align-content-sel':
      propName = 'align-content';
      break;
    default:
      break;
  }
  assignStyles(propName, selectedOption);

}

function setBasicDefaults() {
  const gridDefaults = {
    'grid-template-columns': '1fr 150px 1fr',
    'grid-template-rows': '100px',
    'grid-auto-rows': '60px',
    'grid-gap': '5px 5px',
  };
  
  Object.keys(gridDefaults).forEach((key) => {
    const [ propName, valueString ] = [key, gridDefaults[key]]
    assignStyles(propName, valueString)
  });
  
}


function addControl() {
    
    // if e.target.id.beginsWith col
    // set control with ids on input and sel with that id.
    // check length of current parent container to get numeric ID

    // use this for add row and column.

    // out same control__row
}

function clearFields() {
  const gridItems = Array.from(document.getElementsByClassName('grid__item'));
  gridContainer.setAttribute(`style`, 
    `grid-template-columns: initial; 
    grid-template-rows: initial; 
    grid-auto-columns: initial; 
    grid-auto-rows: initial;
    grid-gap: initial;`
  );
  gridItems.forEach((gridItem) => {
    gridItem.setAttribute(`style`, 
    `grid-area: initial;`                     
    );
  })
}

setBasicDefaults();
addListeners();

// --------------------------------------
// Toggle Views

const toggleControls = document.querySelector('.toggle-controls');
const containerControls = document.querySelector('.grid-controls--container');
const itemControls = document.querySelector('.grid-controls--items');
toggleControls.addEventListener('click', function(){
  containerControls.classList.toggle('slide');
  itemControls.classList.toggle('slide');
});

const toggleView = document.querySelector('.toggle-view');
const singleView = document.querySelector('.single-input');
const fieldsCol = document.querySelector('.multiple-cols');
const fieldsRow = document.querySelector('.multiple-rows');
const fieldsGap = document.querySelector('.multiple-gaps');
const allLines = Array.from(document.getElementsByClassName('seperator'));

toggleView.addEventListener('click', function(){
  fieldsCol.classList.toggle('hidden');
  fieldsRow.classList.toggle('hidden');
  fieldsGap.classList.toggle('hidden');
  singleView.classList.toggle('visible');
  
  allLines.forEach((seperator) => {
    seperator.classList.toggle('hidden');
  })
});


// Reset values on user input whens hidden.

              
            
!
999px

Console