First get acquainted with what hover is and how it works. Hover describes the action of moving a mouse cursor over a clickable object, but does not actually click the left or right mouse button.
For example, when you hover your mouse over any link on this page, you notice that their color changes, indicating that they can be clicked. You will see that this action shows additional information about the link. An animated image is an example of how the cursor changes as it rotates over different elements.
 
 Hover is actually associated with the mouse cursor. As soon as the mouse cursor moves to a certain place, the process of what kind of change will take place in that place is called hover.
Why is Hover used on websites?
You already know the answer. But if no one knows, take a look. Suppose you have attached a download button to your website. 
Now leave it like this? In this case, the person who entered your site will leave the site after seeing it. For this you have to make the hover button of your site more dynamic by using CSS. E.g. There are several changes to the hover button. Hovering the mouse cursor over the button makes the button look black and the text inside white. See below button poparti given - 
 


Now leave it like this? In this case, the person who entered your site will leave the site after seeing it. For this you have to make the hover button of your site more dynamic by using CSS.
E.g.

There are several changes to the hover button. Hovering the mouse cursor over the button makes the button look black and the text inside white. See below button poparti given -

padding:5px; - What amount of space will be around the button.
border-radius: 5px; - How round the button will be.
cursor: pointer;  - The mouse cursor pointer over the button will change.

HTML Poperty:
padding: 5px;
border-radius: 5px;
cursor: pointer;

HOVER Take a look at what's in Poparty -
background:black; - Moving the mouse cursor pointer over the button will turn the button black.
color:white; - When the mouse cursor pointer over the button, the Download text inside the button will turn white.

HOVER Poperty:
  <style>
    .lhbtn:hover{
      background:black;
      color:white;
    }
    </style>

Below is the code for a full CSS Dynamic HOVER button. Take a good look, if necessary, copy the code from here and put the button on your site.

<style>

/* Customize Hover Button */
.lh-button {
  display: inline-block;
  border-radius: 4px;
  background-color:#0541ce;
  border: none;
  color: #137AFF;
  text-align: center;
  font-size: 18px;
  padding: 5px;
  width: 150px;
  height: 35px;
  transition: all 0.5s;
  cursor: pointer;
  margin: 5px;
}

.lh-button span {
  cursor: pointer;
  display: inline-block;
  position: relative;
  transition: 0.5s;
  color: white;
}

.lh-button span:after {
  content: '\00bb';
  position: absolute;
  opacity: 0;
  top: 0;
  right: -20px;
  transition: 0.5s;
}

.lh-button:hover span {
  padding-right: 25px;
}

.lh-button:hover span:after {
  opacity: 1;
  right: 0;
}

</style>


Html Section

<a href="url"><button class="lh-button" style="vertical-align:middle"><span> Click Here</span></button></a>


Preview: