Menú radial animado.

Un menú radial puro basado en HTML / CSS que expande / contrae elementos de menú secuencialmente con animaciones suaves de CSS3.

Incluye el Font Awesome 4 opcional para los íconos del menú.

<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">

Utiliza la casilla de verificación y el truco de la etiqueta para crear un botón de alternar que le permite abrir / cerrar el menú radial.

<input id="check" type="checkbox">
<label class="main" for="check">
  <div class="title">
    <i class="fa fa-bars"></i>
  </div>
</label>

Crea elementos de menú que se muestran alrededor del botón de alternar.

<div class="container">
  <a class="plate" href="#">
    <i class="fa fa-tumblr"></i>
  </a>
  <a class="plate" href="#">
    <i class="fa fa-pinterest"></i>
  </a>
  <a class="plate" href="#">
    <i class="fa fa-instagram"></i>
  </a>
  <a class="plate" href="h#">
    <i class="fa fa-linkedin"></i>
  </a>
  <a class="plate" href="#">
    <i class="fa fa-github"></i>
  </a>
  <a class="plate" href="#" target="_top">
    <i class="fa fa-google-plus"></i>
  </a>
  <a class="plate" href="#" target="_top">
    <i class="fa fa-facebook"></i>
  </a>
  <a class="plate" href="#">
    <i class="fa fa-twitter"></i>
  </a>
</div>

Habilite el menú radial con magia CSS / CSS3.

#check { display: none; }

.main,
.container {
  margin: auto;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 100px;
  border-radius: 50%;
}

.main {
  background-color: #B81365;
  box-shadow: 1px 2px 2px rgba(0, 0, 0, 0.35);
  cursor: pointer;
  z-index: 50;
}

.main:hover { background-color: #cf1572; }

.main:active {
  box-shadow: 1px 2px 2px rgba(0, 0, 0, 0.35), inset 1px 2px 2px rgba(0, 0, 0, 0.35);
  background-color: #a11158;
}

.main .title {
  margin: auto;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  font-size: 3em;
  line-height: 80px;
  text-align: center;
  color: #fafafa;
}

.container { z-index: 10; }

.plate {
  margin: auto;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 50px;
  opacity: 0;
  border-radius: 50%;
  box-shadow: 1px 2px 2px rgba(0, 0, 0, 0.35);
  -webkit-transition: all 0.4s ease-in;
  -moz-transition: all 0.4s ease-in;
  transition: all 0.4s ease-in;
}

.plate i {
  width: 100%;
  font-size: 2em;
  line-height: 53px;
  text-align: center;
  color: #333;
}

.plate:hover i { color: #111; }

.plate:nth-of-type(1) {
  background-color: rgba(109, 231, 200, 0.3);
  -webkit-transition-delay: 0s;
  -moz-transition-delay: 0s;
  transition-delay: 0s;
}

.plate:nth-of-type(2) {
  background-color: rgba(243, 156, 80, 0.1);
  -webkit-transition-delay: 0.1s;
  -moz-transition-delay: 0.1s;
  transition-delay: 0.1s;
}

.plate:nth-of-type(3) {
  background-color: rgba(247, 80, 173, 0.1);
  -webkit-transition-delay: 0.2s;
  -moz-transition-delay: 0.2s;
  transition-delay: 0.2s;
}

.plate:nth-of-type(4) {
  background-color: rgba(80, 128, 136, 0.5);
  -webkit-transition-delay: 0.3s;
  -moz-transition-delay: 0.3s;
  transition-delay: 0.3s;
}

.plate:nth-of-type(5) {
  background-color: rgba(191, 95, 80, 0.9);
  -webkit-transition-delay: 0.4s;
  -moz-transition-delay: 0.4s;
  transition-delay: 0.4s;
}

.plate:nth-of-type(6) {
  background-color: rgba(101, 128, 216, 0.7);
  -webkit-transition-delay: 0.5s;
  -moz-transition-delay: 0.5s;
  transition-delay: 0.5s;
}

.plate:nth-of-type(7) {
  background-color: rgba(210, 80, 80, 0.2);
  -webkit-transition-delay: 0.6s;
  -moz-transition-delay: 0.6s;
  transition-delay: 0.6s;
}

.plate:nth-of-type(8) {
  background-color: rgba(114, 89, 202, 0.9);
  -webkit-transition-delay: 0.7s;
  -moz-transition-delay: 0.7s;
  transition-delay: 0.7s;
}

#check:checked ~ .main + .container .plate { opacity: 1; }

#check:checked ~ .main + .container .plate:nth-of-type(1) { top: -180%; }

#check:checked ~ .main + .container .plate:nth-of-type(2) {
  top: -130%;
  right: -130%;
}

#check:checked ~ .main + .container .plate:nth-of-type(3) { right: -180%; }

#check:checked ~ .main + .container .plate:nth-of-type(4) {
  right: -130%;
  bottom: -130%;
}

#check:checked ~ .main + .container .plate:nth-of-type(5) { bottom: -180%; }

#check:checked ~ .main + .container .plate:nth-of-type(6) {
  bottom: -130%;
  left: -130%;
}

#check:checked ~ .main + .container .plate:nth-of-type(7) { left: -180%; }

#check:checked ~ .main + .container .plate:nth-of-type(8) {
  top: -130%;
  left: -130%;
}


ORIGEN DE LA ENTRADA: 

https://www.cssscript.com/pure-css-css3-animated-radial-menu/