FAB with Pure CSS3

Efeito de FAB (Float Action Button) com CSS3 puro.

by Rodrigo Portillo

HTML

<div class="fab">
  <button class="main">
  </button>
  <ul>
    <li>
      <label for="opcao1">Opção 1</label>
      <button id="opcao1">
      ⎈
      </button>
    </li>
    <li>
      <label for="opcao2">Opção 2</label>
      <button id="opcao2">
      ⎗
      </button>
    </li>
    <li>
      <label for="opcao3">Opção 3</label>
      <button id="opcao3">
      ☏
      </button>
    </li>
  </ul>
</div>

CSS

body{
  font-family: sans-serif;
}

.fab{
  position: fixed;
  bottom:10px;
  right:10px;
}

.fab button{
  cursor: pointer;
  width: 48px;
  height: 48px;
  border-radius: 30px;
  background-color: #cb60b3;
  border: none;
  box-shadow: 0 1px 5px rgba(0,0,0,.4);
  font-size: 24px;
  color: white;
    
  -webkit-transition: .2s ease-out;
  -moz-transition: .2s ease-out;
  transition: .2s ease-out;
}

.fab button:focus{
  outline: none;
}

.fab button.main{
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 30px;
  background-color: #5b19b7;
  right: 0;
  bottom: 0;
  z-index: 20;
}

.fab button.main:before{
  content: '⏚';
}

.fab ul{
  position:absolute;
  bottom: 0;
  right: 0;
  padding:0;
  padding-right:5px;
  margin:0;
  list-style:none;
  z-index:10;
  
  -webkit-transition: .2s ease-out;
  -moz-transition: .2s ease-out;
  transition: .2s ease-out;
}

.fab ul li{
  display: flex;
  justify-content: flex-start;
  position: relative;
  margin-bottom: -10%;
  opacity: 0;
  
  -webkit-transition: .3s ease-out;
  -moz-transition: .3s ease-out;
  transition: .3s ease-out;
}

.fab ul li label{
  margin-right:10px;
  white-space: nowrap;
  display: block;
  margin-top: 10px;
  padding: 5px 8px;
  background-color: white;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
  border-radius:3px;
  height: 18px;
  font-size: 16px;
  pointer-events: none;
  opacity:0;
  
  -webkit-transition: .2s ease-out;
  -moz-transition: .2s ease-out;
  transition: .2s ease-out;
}

.fab.show button.main,
.fab.show button.main{
  outline: none;
  background-color: #7716ff;
  box-shadow: 0 3px 8px rgba(0,0,0,.5);
 }
 
.fab.show button.main:before,
.fab.show button.main:before{
  content: '↑';
}

.fab.show button.main + ul,
.fab.show button.main + ul{
  bottom: 70px;
}

.fab.show button.main + ul li,
.fab.show button.main + ul li{
  margin-bottom: 10px;
  opacity: 1;
}

.fab.show button.main + ul li:hover label,
.fab.show button.main + ul li:hover label{
  opacity: 1;
}

JavaScript

function toggleFAB(fab){
	if(document.querySelector(fab).classList.contains('show')){
  	document.querySelector(fab).classList.remove('show');
  }else{
  	document.querySelector(fab).classList.add('show');
  }
}

document.querySelector('.fab .main').addEventListener('click', function(){
	toggleFAB('.fab');
});

document.querySelector('.fab ul li button').forEach(function(item){
	item.addEventListener('click', function(){
		toggleFAB('.fab');
	});
});