I want to make a circle button with text and different text on hover CSS

Question

I'm trying to make a circle button (I was thinking submit button or link to another page) that has a label/text on it, and then when you hover it has different text. I've been able to find tutorials on all of these things individually, but together I can't quite get them to work.

Currently I have:

HTML

<div class='button'>
     <a href='activities.php'>
          <div class='text'> hello world </div>
          <img src="/Images/budapest.jpg">
     </a>
</div>

CSS

.button img { /*http://codeitdown.com/css-round-buttons/*/
    display:                block;
    width:                  30vmin;
    height:                 30vmin;
    line-height:            50px;
    border:                 2px;
    border-radius:          50%;
    color:                  #000000;
    text-align:             center;
    text-decoration:        none;
    background:             #000000;
    font-size:              20px;
    font-weight:            bold;
    z-index:                1;
}
.text{
    display:                block;
}
.text:hover {
    display:                none;
    z-index:                2;
}

.button input[type=submit].nav  {
    font-family:            'Optima', sans-serif;
    height:                 auto;
    width:                  auto;
    background:             #111111;
    border-radius:          1vmin;
    color:                  #FFFFFF;
    font-size:              2vmin;
    z-index:                2;
}

The button currently is the image I want - yay, and indeed redirects to the correct page. However, the text "hello world" always shows (instead of only when on hover), is above the image (not on top of it), and I can click on it or the button to redirect me. Also, how do I get the text to change when I hover?

Update

The remaining problem is that the text is not inside the button/image.

My Code

.button img { /*http://codeitdown.com/css-round-buttons/*/
  display:				block;
  width:					30vmin;
  height:					30vmin;
  line-height:			50px;
  border: 				2px;
  border-radius: 			50%;
  color:					#000000;
  text-align:				center;
  text-decoration:		none;
  background: 			#000000;
  font-size:				20px;
  font-weight:			bold;
  z-index: 				1;
}
.button .text-after {
  display: 				none;
}
.button:hover .text-after {
  display: 				inline;
}
.button:hover .text-before {
  display: 				none;
}

<div class='button'>
  <a href='activities.php'>
    <span class="text-before">Before</span>
    <span class="text-after">After</span>
    <img src="/Images/budapest.jpg">
  </a>
</div>

Answer 1

Don't use <div> inside <a> (Worst nightmare! Division inside a link? Block inside an inline?).

Secondly use two text containers like this:

<div class='button'>
     <a href='activities.php'>
          <span class="text-before">Before</span>
          <span class="text-after">After</span>
          <img src="/Images/budapest.jpg">
     </a>
</div>

Use this CSS:

.button .text-after {display: none;}
.button:hover .text-after {display: inline;}
.button:hover .text-before {display: none;}

Updated Snippet

My Code

.button img { /*http://codeitdown.com/css-round-buttons/*/
  display:				block;
  width:				30vmin;
  height:				30vmin;
  line-height:			50px;
  border: 				2px;
  border-radius: 		50%;
  color:				#000000;
  text-align:			center;
  text-decoration:		none;
  background: 			#333333;
  font-size:		    20px;
  font-weight:			bold;
  z-index: 				1;
}
.button .text-after {
  display: 				none;
}
.button:hover .text-after {
  display: 				inline;
}
.button:hover .text-before {
  display: 				none;
}

.button a {
  text-align: center;
  display: block;
  width: 89.6875px; /* should be the width of image*/
  line-height: 89.6875px;
  position: absolute;
  z-index: 9;
  left: 0;
  top: 0;
}

.button {
  position: relative;
  z-index: 9;
}

.button img {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 1;
}

<div class='button'>
  <a href='activities.php'>
    <span class="text-before">Beforexd</span>
    <span class="text-after">After</span>
    <img src="/Images/budapest.jpg">
  </a>
</div>

The above is what I did, but unfortunately it didn't work. I don't know why, but I can give you a different solution:

.round-img-button {
  width: 100px;
  height: 100px;
  position: relative;
}

.round-img-button a,
.round-img-button img {
  position: absolute;
  width: 100px;
  height: 100px;
  left: 0;
  top: 0;
  z-index: 1;
}

.round-img-button a {
  z-index: 2;
  color: #fff;
  text-decoration: none;
  text-align: center;
  line-height: 100px;
}

.round-img-button a .after {
  display: none;
}

.round-img-button:hover a .after {
  display: inline;
}

.round-img-button:hover a .before {
  display: none;
}

<div class="round-img-button">
  <a href="#">
    <span class="after">Hover</span>
    <span class="before">Normal</span>
  </a>
  <img src="http://lorempixel.com/100/100" alt="" />
</div>

Answer 2

Here's an example http://jsfiddle.net/josedvq/Jyjjx/45/ can be answer for your question.

<div class="round-button"><div class="round-button-circle"><a href="http://example.com" class="round-button">Button!!</a></div></div>

Answer 3

Please try

.button a:hover .text {
    display:                none;
    z-index:                2;
}