CSS Tooltip
Create tooltips with CSS.
Demo: Tooltip Examples
A tooltip is often used to specify extra information about something when the
user moves the mouse pointer over an element:
Top
Tooltip text
Right
Tooltip text
Bottom
Tooltip text
Left
Tooltip text
Basic Tooltip
Create a tooltip that appears when the user moves the mouse over an element:
Example
<style>/* Tooltip container */.tooltip { position: relative;
display: inline-block; border-bottom: 1px dotted
black; /* If you want dots under the hoverable text */}/* Tooltip text
*/.tooltip .tooltiptext { visibility: hidden; width: 120px;
background-color: black; color: #fff; text-align: center;
padding: 5px 0;
border-radius: 6px;
/* Position the tooltip text - see examples below! */ position: absolute;
z-index: 1;}/* Show
the tooltip text when you mouse over the tooltip container */.tooltip:hover
.tooltiptext { visibility: visible;}</style><div class="tooltip">Hover
over me
<span class="tooltiptext">Tooltip
text</span></div>
Try it Yourself »
Example Explained
HTML: Use a container element (like <div>) and add the
"tooltip" class to it. When the user mouse over this <div>, it will show the
tooltip text.
The tooltip text is placed inside an inline element (like <span>) with class="tooltiptext".
CSS: The tooltip class use position:relative,
which is needed to position the tooltip text (position:absolute).
Note: See examples below on how to position the tooltip.
The tooltiptext class holds the actual tooltip text. It is
hidden by default, and will be visible on hover (see below). We have also added
some basic styles to it: 120px width, black background color, white text color,
centered text, and 5px top and bottom padding.
The CSS border-radius property is used to add rounded corners to the tooltip
text.
The :hover selector is used to show the tooltip text when the user moves the
mouse over the <div> with class="tooltip".
Positioning Tooltips
In this example, the tooltip is placed to the right (left:105%) of the "hoverable"
text (<div>). Also note that top:-5px is used to place it in the middle of its container element.
We use the number 5 because the tooltip text has a top and
bottom padding of
5px. If you increase its padding, also increase the value of the top property to
ensure that it stays in the middle (if this is something you want). The same
applies if you want the tooltip placed to the left.
Right Tooltip
.tooltip .tooltiptext { top: -5px;
left:
105%; }
Result:
Hover over me
Tooltip text
Try it Yourself »
Left Tooltip
.tooltip .tooltiptext { top: -5px;
right:
105%; }
Result:
Hover over me
Tooltip text
Try it Yourself »
If you want the tooltip to appear on top or on the bottom, see examples
below. Note that we use the margin-left property with a value of minus 60
pixels. This is to center the tooltip above/below the hoverable text. It is set
to the half of the tooltip's width (120/2 = 60).
Top Tooltip
.tooltip .tooltiptext { width: 120px;
bottom: 100%; left:
50%; margin-left: -60px; /* Use half of the width
(120/2 = 60), to center the tooltip */}
Result:
Hover over me
Tooltip text
Try it Yourself »
Bottom Tooltip
.tooltip .tooltiptext { width: 120px; top: 100%; left:
50%; margin-left: -60px; /* Use half of the width
(120/2 = 60), to center the tooltip */}
Result:
Hover over me
Tooltip text
Try it Yourself »
Tooltip Arrows
To create an arrow that should appear from a specific side of the tooltip, add "empty"
content after
tooltip, with the pseudo-element class ::after together with the content
property. The arrow itself is created using borders. This will make the tooltip
look like a speech bubble.
This example demonstrates how to add an arrow to the bottom of the tooltip:
Bottom Arrow
.tooltip .tooltiptext::after { content: " "; position: absolute;
top: 100%;
/* At the bottom of the tooltip */ left: 50%; margin-left: -5px;
border-width: 5px; border-style: solid;
border-color: black transparent transparent transparent;}
Result:
Hover over me
Tooltip text
Try it Yourself »
Example Explained
Position the arrow inside the tooltip: top: 100% will place the arrow at the
bottom of the tooltip. left: 50% will center the arrow.
Note: The border-width property specifies the size of the
arrow. If you change this, also change the margin-left value to the same. This
will keep the arrow centered.
The border-color is used to transform the content into an arrow. We set the
top border to black, and the rest to transparent. If all sides were black, you
would end up with a black square box.
This example demonstrates how to add an arrow to the top of the tooltip.
Notice that we set the bottom border color this time:
Top Arrow
.tooltip .tooltiptext::after { content: " "; position: absolute; bottom: 100%; /* At the top of the tooltip */
left: 50%; margin-left: -5px;
border-width: 5px; border-style: solid;
border-color: transparent transparent black transparent;}
Result:
Hover over me
Tooltip text
Try it Yourself »
This example demonstrates how to add an arrow to the left of the tooltip:
Left Arrow
.tooltip .tooltiptext::after { content: " "; position: absolute; top: 50%;
right: 100%; /* To the left of the tooltip
*/ margin-top: -5px;
border-width: 5px; border-style: solid;
border-color: transparent black transparent transparent;}
Result:
Hover over me
Tooltip text
Try it Yourself »
This example demonstrates how to add an arrow to the right of the tooltip:
Right Arrow
.tooltip .tooltiptext::after { content: " "; position: absolute;
top: 50%; left: 100%; /* To the right of the
tooltip */ margin-top: -5px;
border-width: 5px; border-style: solid;
border-color: transparent transparent transparent black;}
Result:
Hover over me
Tooltip text
Try it Yourself »
Fade In Tooltips (Animation)
If you want to fade in the tooltip text when it is about to be visible, you
can use the CSS transition property together with the opacity
property, and go from being completely invisible to 100% visible, in a number of specified seconds
(1 second in our example):
Example
.tooltip .tooltiptext { opacity: 0;
transition: opacity 1s;}.tooltip:hover
.tooltiptext { opacity: 1;}
Try it Yourself »
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Reference: https://www.w3schools.com/css/css_tooltip.asp