Change button:active in css

Question

how i can change button to have border-radius: 6px; and to by active marked when i will select it. Here is my HTML code and i also have CSS. When i make

Answer 1

change

class="button:active" 

to

class="button"

and add to your css

button:active {
// your button:active styling
}

Answer 2

The : indicates a pseudo-class (pr pseudo-element). It is not part of the class name.

:active means "While being clicked on" (or otherwise activated).

If you want to match a class in the document, then give it a regular class name (and preferably not one that could be confused with a pseudo-class):

<button class="current"

Then use a class selector in the CSS:

.current { ... }

Answer 3

Add this to your css

.button:active{
    border-radius: 6px;
}

In your html just add the below code. NOTE- :active :hover should be in your css, not in your class attribute. Hence remove :active from your class attribute as below

<div align="center">
<label>
        Period selection   </label>
    <button class="button" id="Day" style="height:25px; width:60px; margin: 4px 2px" type="submit" onclick="setImage('1') ;">
        Day</button>

     <button class="button" id="Week" style="height:25px; width:60px; margin: 4px 2px" type="submit" onclick="setImage('2') ;">
        Week</button>

     <button class="button" id="Month" style="height:25px; width:60px; margin: 4px 2px" type="submit" onclick="setImage('3') ;">
        Month</button>
</div>

Answer 4

In CSS, colons have a special meaning: they introduce pseudo-classes.

Therefore, if you want to select the following HTML by its class...

<button class="button:active"></button>

...you must escape the colon:

.button\:active

.button\:active {
  background-color: #2B2B2B;
  border: 0px;
  display: inline-block;
  padding: 3px 10px 4px;
  color: #fff;
  text-decoration: none;
  -moz-border-radius: 6px;
  -webkit-border-radius: 6px;
  border-radius: 6px;
  -moz-box-shadow: 0 1px 3px rgba(0,0,0,0.6);
  -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.6);
  text-shadow: 0 -1px 1px rgba(0,0,0,0.25);
  border-bottom: 1px solid rgba(0,0,0,0.25);
  position: relative;
  cursor: pointer;
  margin: 4px 2px;
}

<button class="button:active">Button</button>