Add an arrow or triangle at the tip of the line

I am currently working on recreating the design of lines with an arrow or triangle at the end side of an Input form. The inspiration for this comes from an old flash application that is now being converted to HTML5:

So far, I have managed to create the lines around the input field similar to this:

HTML

<form action="">
    <div class="line">
        <label>Cab Width = 
            <input type="number" id="cabWidth" name="cabWidth" min="30" max="57.5" step="0.125" value="32" autofocus> (decimal inches)
        </label>
    </div>
</form>

CSS

.line {
  display: flex;
  flex: 1;
  width: 100%;
  margin: 20px auto;
  line-height: 1em;
}
.line:before, .line:after {
  content: '';
  flex-grow: 1;
  margin: 0px 4px;
  background: linear-gradient(black, black);
  background-size: 100% 2px;
  background-position: 0% 50%;
  background-repeat: repeat-x;
}

However, I'm struggling to find a way to incorporate a CSS triangle or arrow at the end of these lines. It's proving to be quite challenging.

If anyone has any suggestions or advice on how I could tackle this issue, it would be greatly appreciated.

csshtml

Answer №1

Your solution was almost there, but the issue arose when trying to use :after:after for adding the arrows. Here is a different approach that I took:

Instead of using :after:after, I created two separate line spans and added the arrows to each end using :after.

.line-container {
  display: flex;
  width: 100%;
  margin: 20px auto;
  align-items: center;
}

.line {
  flex-grow: 1;
  height: 1px;
  background: black;
  position: relative;
}

.line.arrow-right:after {
  position: absolute;
  content: '';
  bottom: -10px;
  right: 0;
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 10px solid black;
}

.line.arrow-left:after {
  position: absolute;
  content: '';
  top: -10px;
  left: 0;
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-right: 10px solid black;
}

label {
  margin: 0 15px;
}
<form action="">
  <div class="line-container">
    <span class="line arrow-left"></span>
    <label>Cab Width =
      <input type="number" id="cabWidth" name="cabWidth" min="30" max="57.5" step="0.125" value="32" autofocus> (decimal inches)
    </label>
    <span class="line arrow-right"></span>
  </div>
</form>

Answer №2

When utilizing Bootstrap, you have access to a selection of Glyphicons for free, including various arrow classes.

http://getbootstrap.com/components/

You can easily link in Bootstrap from their Content Delivery Network (CDN).

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

If you do not require the JavaScript components, simply link to the bootstrap.min.css file mentioned above and skip the optional theme and JavaScript.

Add the desired glyphicon by applying the appropriate class to an empty span element. Refer to the available icons on the official site.

<span class="glyphicon glyphicon-chevron-left"></span>
<span class="glyphicon glyphicon-chevron-right"></span>

To include these using CSS to an existing element, utilize the :after syntax and find the corresponding code in the Bootstrap css file for the icon you wish to use. For instance, for the examples given:

glyphicon-chevron-right

:after {
    font-family: 'Glyphicons Halflings';
    content: "\e080";
}

glyphicon-chevron-left

:after {
    font-family: 'Glyphicons Halflings';
    content: "\ e079";
}

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