CSS Simple Tooltip

css-simple-tooltip.markdown

CSS Simple Tooltip

A Pen by TOBY on CodePen.

License.

index.html

<h1>CSS Simple Tooltip</h1>

<div class="demo">
  <p>
    <a href="#" data-tooltip="あいうえお">A link with a tooltip</a>
    &nbsp;
    <a href="#" data-tooltip="always-on" data-tooltip-alwayson>Always-on</a>
    &nbsp;
    <a href="#" data-tooltip="あいうえお" data-tooltip-pos="bottom" data-tooltip-alwayson>Under tooltip</a>
  </p>

  <p>
    <button data-tooltip="Long long tooplip. 長い長いツールチップ">
      button with a tooltip</button>
    <button data-tooltip="Long long tooplip. 長い長いツールチップ"
            data-tooltip-alwayson
            style="">
      Always on</button>
    <button data-tooltip="bottom tooltip. "
            data-tooltip-pos="bottom"
            data-tooltip-alwayson
            >
      Under</button>
  </p>
</div>

<hr>

<a href="https://codepen.io/cbracco/pen/qzukg">Original code by @cbracco</a>

style.css

/**
 * Demo styles
 * Not needed for tooltips to work
 */

/* `border-box`... ALL THE THINGS! */
html {
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 64px auto;
  text-align: center;
  font-size: 100%;
  max-width: 640px;
  width: 94%;
}

header, .demo, .demo p {
  margin: 3em 0 6em 0;
  text-align: center;
}


/**
 * Tooltip Styles
 */

/* Add this attribute to the element that needs a tooltip */
[data-tooltip] {
  position: relative;
  z-index: 2;
  cursor: pointer;
}

/* Hide the tooltip content by default 
 * Show the tooltip, if always-on by data attributes
 */
[data-tooltip]:not([data-tooltip-alwayson]):before,
[data-tooltip]:not([data-tooltip-alwayson]):after {
  visibility: hidden;
  opacity: 0.0;
}

/* Prevent click events */
[data-tooltip]:before,
[data-tooltip]:after {
  pointer-events: none;
}

/* Show tooltip content on hover */
[data-tooltip]:hover:before,
[data-tooltip]:hover:after {
  visibility: visible;
  opacity: 1;
}

/* Position tooltip above the element */
[data-tooltip]:before {
  position: absolute;
  transform: translateX(-50%);
  padding: 7px;
  border-radius: 3px;
  background-color: hsla(0, 0%, 20%, 1.0);
  color: #fff;
  content: attr(data-tooltip);
  text-align: center;
  font-size: 14px;
  line-height: 1.2;
  left: 50%;
  margin-bottom: 5px;
  word-break: keep-all;

  min-width: 100px;
  bottom: 110%;
}

/* Triangle hack to make tooltip look like a speech bubble */
[data-tooltip]:after {
  position: absolute;
  content: " ";
  font-size: 0;
  line-height: 0;
  left: 50%;
  margin-left: -5px;
  width: 0;
  
  bottom: 110%;
  border-top: 5px solid hsla(0, 0%, 20%, 1.0);
  border-right: 5px solid transparent;
  border-left: 5px solid transparent;
}

/* Position tooltip below the element */
[data-tooltip-pos="bottom"]:before {
  bottom: initial;
  top: 120%;
  top: attr(data-tooltip-pos-val);
}
[data-tooltip-pos="bottom"]:after {
  bottom: initial;
  top: 120%;
  margin-top: -5px;

  border-top: none;
  border-bottom: 5px solid hsla(0, 0%, 20%, 1.0);
  border-right: 5px solid transparent;
  border-left: 5px solid transparent;  
}