*, *:after, *:before {
  box-sizing: border-box;
}

body {
    margin: 0;
    background-color: #262626;
}

section {
  background: #eceff1;
  width: 100%;
  padding: 50px;
  min-height: 200px;
}

.btn-float {
  width: 50px;
  height: 50px;
  line-height: 50px;
  display: inline-block;
  border: none;
  font-size: 18px;
  color: #fff;
  text-align: center;
  position: relative;
  -webkit-transition: 0.3s;
  transition: 0.3s;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.11);
}
.btn-float:hover {
  text-decoration: none;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.15), 0 4px 15px rgba(0, 0, 0, 0.13);
}
.btn-float:active, .btn-float:focus {
  outline: none;
}
.btn-float + .btn-float {
  margin-left: 5px;
}

.yellow {
  background: #ffa000;
}

.blue {
  background: #40c4ff;
}

.green {
  background: #00e676;
}

.purple {
  background: #8e24aa;
}

.pink {
  background: #e91e63;
}

.icon-bars {
  background: #fff;
  height: 1px;
  width: 22px;
  margin: auto;
  display: block;
  position: relative;
  -moz-transition: 0.3s 0.3s;
  -o-transition: 0.3s 0.3s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.3s 0.3s;
          transition: 0.3s 0.3s;
}
.icon-bars:after {
  content: '';
  position: absolute;
  height: 22px;
  width: 1px;
  background: #fff;
  top: -10px;
}

.float-btn-group {
  position: relative;
  float: right;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.float-btn-group .btn-triger {
  z-index: 15;
  float: left;
}
.float-btn-group .btn-list {
  position: absolute;
  right: 0;
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.float-btn-group .btn-list li {
  display: inline-block;
}
.float-btn-group.open .icon-bars {
  -ms-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}

.model-0 .float-btn-group {
  width: 65px;
  padding-left: 15px;
  min-height: 65px;
  overflow: hidden;
}
.model-0 .float-btn-group .btn-list {
  opacity: 0;
  width: 215px;
}
.model-0 .float-btn-group.open {
  width: 285px;
}
.model-0 .float-btn-group.open .btn-list {
  opacity: 1;
}

.model-1 {
  background: #cfd8dc;
}
.model-1 .float-btn-group {
  margin: auto;
  float: none;
  width: 50px;
}
.model-1 .float-btn-group .icon-bars {
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.model-1 .float-btn-group .btn-list {
  background: rgba(0, 0, 0, 0.2);
  width: 50px;
  height: 50px;
  overflow: hidden;
  left: 0;
  top: 0;
  opacity: 0;
  -moz-transition: 0.3s 0.3s;
  -o-transition: 0.3s 0.3s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.3s 0.3s;
          transition: 0.3s 0.3s;
  border-radius: 50%;
}
.model-1 .float-btn-group .btn-list .btn-float {
  position: absolute;
  background: none;
  box-shadow: none;
  -ms-transform: scale(0, 0);
  -webkit-transform: scale(0, 0);
  transform: scale(0, 0);
  margin: auto;
}
.model-1 .float-btn-group .btn-list .btn-float:nth-child(1) {
  left: 0;
  right: 0;
  top: 10px;
}
.model-1 .float-btn-group .btn-list .btn-float:nth-child(2) {
  left: 10px;
  top: 0;
  bottom: 0;
}
.model-1 .float-btn-group .btn-list .btn-float:nth-child(3) {
  left: 0;
  right: 0;
  bottom: 10px;
}
.model-1 .float-btn-group .btn-list .btn-float:nth-child(4) {
  right: 10px;
  top: 0;
  bottom: 0;
}
.model-1 .float-btn-group.open .btn-list {
  width: 200px;
  height: 200px;
  left: -75px;
  top: -75px;
  opacity: 1;
}
.model-1 .float-btn-group.open .btn-list .btn-float {
  -ms-transform: scale(1.1, 1.1);
  -webkit-transform: scale(1.1, 1.1);
  transform: scale(1.1, 1.1);
  -moz-transition: 0.3s 0.6s;
  -o-transition: 0.3s 0.6s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.6s;
  -webkit-transition: 0.3s 0.6s;
          transition: 0.3s 0.6s;
}
.model-1 .float-btn-group.open .btn-list .btn-float:hover {
  -webkit-transition: 0.3s;
  transition: 0.3s;
  text-shadow: 1px 4px 1px #666;
}

.model-2 {
  background: #b0bec5;
}
.model-2 .float-btn-group {
  float: left;
}
.model-2 .float-btn-group .icon-bars {
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.model-2 .float-btn-group .btn-list .btn-float {
  position: absolute;
  right: 0;
  top: 0;
  opacity: 0;
  -ms-transform: scale(0, 0);
  -webkit-transform: scale(0, 0);
  transform: scale(0, 0);
}
.model-2 .float-btn-group .btn-list .btn-float:nth-child(1) {
  -moz-transition: 0.2s 0.3s;
  -o-transition: 0.2s 0.3s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.2s 0.3s;
          transition: 0.2s 0.3s;
}
.model-2 .float-btn-group .btn-list .btn-float:nth-child(2) {
  -moz-transition: 0.2s 0.5s;
  -o-transition: 0.2s 0.5s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.5s;
  -webkit-transition: 0.2s 0.5s;
          transition: 0.2s 0.5s;
}
.model-2 .float-btn-group .btn-list .btn-float:nth-child(3) {
  -moz-transition: 0.2s 0.7s;
  -o-transition: 0.2s 0.7s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.7s;
  -webkit-transition: 0.2s 0.7s;
          transition: 0.2s 0.7s;
}
.model-2 .float-btn-group .btn-list .btn-float:nth-child(4) {
  -moz-transition: 0.2s 0.92s;
  -o-transition: 0.2s 0.92s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.92s;
  -webkit-transition: 0.2s 0.92s;
          transition: 0.2s 0.92s;
}
.model-2 .float-btn-group.open .btn-list .btn-float {
  opacity: 1;
  -ms-transform: scale(0.9, 0.9);
  -webkit-transform: scale(0.9, 0.9);
  transform: scale(0.9, 0.9);
}
.model-2 .float-btn-group.open .btn-list .btn-float:nth-child(1) {
  top: -220px;
  -moz-transition: 0.2s 0.9s;
  -o-transition: 0.2s 0.9s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.9s;
  -webkit-transition: 0.2s 0.9s;
          transition: 0.2s 0.9s;
}
.model-2 .float-btn-group.open .btn-list .btn-float:nth-child(2) {
  top: -165px;
  -moz-transition: 0.2s 0.7s;
  -o-transition: 0.2s 0.7s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.7s;
  -webkit-transition: 0.2s 0.7s;
          transition: 0.2s 0.7s;
}
.model-2 .float-btn-group.open .btn-list .btn-float:nth-child(3) {
  top: -110px;
  -moz-transition: 0.2s 0.5s;
  -o-transition: 0.2s 0.5s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.5s;
  -webkit-transition: 0.2s 0.5s;
          transition: 0.2s 0.5s;
}
.model-2 .float-btn-group.open .btn-list .btn-float:nth-child(4) {
  top: -55px;
  -moz-transition: 0.2s 0.3s;
  -o-transition: 0.2s 0.3s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.2s 0.3s;
          transition: 0.2s 0.3s;
}

.model-3 {
  background: #90a4ae;
}
.model-3 .float-btn-group {
  float: none;
  width: 50px;
  margin: auto;
}
.model-3 .float-btn-group .icon-bars {
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.model-3 .float-btn-group .btn-list {
  background: #fff;
  border-radius: 50px;
  width: 50px;
  height: 50px;
  left: 0;
  overflow: hidden;
  opacity: 0;
}
.model-3 .float-btn-group .btn-list .btn-float {
  -webkit-transition: 0.2s;
  transition: 0.2s;
  position: absolute;
  top: 0;
  left: 0;
  -ms-transform: scale(0, 0);
  -webkit-transform: scale(0, 0);
  transform: scale(0, 0);
}
.model-3 .float-btn-group .btn-list .btn-float:nth-child(2) {
  left: 50px;
}
.model-3 .float-btn-group .btn-list .btn-float:nth-child(3) {
  left: 160px;
}
.model-3 .float-btn-group .btn-list .btn-float:nth-child(4) {
  left: 215px;
}
.model-3 .float-btn-group.open .btn-list {
  width: 270px;
  left: -110px;
  opacity: 1;
}
.model-3 .float-btn-group.open .btn-list .btn-float {
  -moz-transition: 0.2s 0.3s;
  -o-transition: 0.2s 0.3s;
  -webkit-transition: 0.2s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.2s 0.3s;
          transition: 0.2s 0.3s;
  -ms-transform: scale(0.9, 0.9);
  -webkit-transform: scale(0.9, 0.9);
  transform: scale(0.9, 0.9);
}

.model-4 {
  background: #78909c;
}
.model-4 .float-btn-group .icon-bars {
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.model-4 .float-btn-group .btn-list .btn-float {
  position: absolute;
  right: 0;
  top: 0;
  opacity: 0;
}
.model-4 .float-btn-group .btn-list .btn-float:nth-child(1) {
  -moz-transition: 0.3s 1.2s;
  -o-transition: 0.3s 1.2s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 1.2s;
  -webkit-transition: 0.3s 1.2s;
          transition: 0.3s 1.2s;
}
.model-4 .float-btn-group .btn-list .btn-float:nth-child(2) {
  -moz-transition: 0.3s 0.9s;
  -o-transition: 0.3s 0.9s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.9s;
  -webkit-transition: 0.3s 0.9s;
          transition: 0.3s 0.9s;
}
.model-4 .float-btn-group .btn-list .btn-float:nth-child(3) {
  -moz-transition: 0.3s 0.6s;
  -o-transition: 0.3s 0.6s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.6s;
  -webkit-transition: 0.3s 0.6s;
          transition: 0.3s 0.6s;
}
.model-4 .float-btn-group .btn-list .btn-float:nth-child(4) {
  -moz-transition: 0.3s 0.3s;
  -o-transition: 0.3s 0.3s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.3s 0.3s;
          transition: 0.3s 0.3s;
}
.model-4 .float-btn-group.open .btn-list .btn-float {
  opacity: 1;
}
.model-4 .float-btn-group.open .btn-list .btn-float:nth-child(1) {
  right: 230px;
  -moz-transition: 0.3s 0.3s;
  -o-transition: 0.3s 0.3s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.3s 0.3s;
          transition: 0.3s 0.3s;
}
.model-4 .float-btn-group.open .btn-list .btn-float:nth-child(2) {
  right: 165px;
  -moz-transition: 0.3s 0.6s;
  -o-transition: 0.3s 0.6s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.6s;
  -webkit-transition: 0.3s 0.6s;
          transition: 0.3s 0.6s;
}
.model-4 .float-btn-group.open .btn-list .btn-float:nth-child(3) {
  right: 110px;
  -moz-transition: 0.3s 0.9s;
  -o-transition: 0.3s 0.9s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.9s;
  -webkit-transition: 0.3s 0.9s;
          transition: 0.3s 0.9s;
}
.model-4 .float-btn-group.open .btn-list .btn-float:nth-child(4) {
  right: 55px;
  -moz-transition: 0.3s 1.2s;
  -o-transition: 0.3s 1.2s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 1.2s;
  -webkit-transition: 0.3s 1.2s;
          transition: 0.3s 1.2s;
}

.model-5 {
  background: #607d8b;
}
.model-5 .float-btn-group {
  float: none;
  width: 50px;
  margin: auto;
}
.model-5 .float-btn-group .icon-bars {
  -webkit-transition: 0.4s;
  transition: 0.4s;
}
.model-5 .float-btn-group .btn-list {
  border-radius: 50px;
  -ms-transform: rotate(360deg);
  -webkit-transform: rotate(360deg);
  transform: rotate(360deg);
  -webkit-transition: -webkit-transform 0.4s, width 0.3s, opacity 0.3s, left 0.3s;
  -webkit-transition-delay: 0s, 0.5s, 0.1s, 0.5s;
  -webkit-transition: -webkit-transform 0.4s, width 0.3s 0.5s, opacity 0.3s 0.1s, left 0.3s 0.5s;
          transition: transform 0.4s, width 0.3s 0.5s, opacity 0.3s 0.1s, left 0.3s 0.5s;
  width: 50px;
  height: 50px;
  left: 0;
  overflow: hidden;
  opacity: 0;
}
.model-5 .float-btn-group .btn-list .btn-float {
  -webkit-transition: 0.2s;
  transition: 0.2s;
  position: absolute;
  top: 0;
  left: 0;
  -ms-transform: scale(1.5, 1.5);
  -webkit-transform: scale(1.5, 1.5);
  transform: scale(1.5, 1.5);
}
.model-5 .float-btn-group .btn-list .btn-float:nth-child(2) {
  left: 50px;
}
.model-5 .float-btn-group .btn-list .btn-float:nth-child(3) {
  left: 160px;
}
.model-5 .float-btn-group .btn-list .btn-float:nth-child(4) {
  left: 215px;
}
.model-5 .float-btn-group.open .icon-bars {
  -ms-transform: rotate(-225deg);
  -webkit-transform: rotate(-225deg);
  transform: rotate(-225deg);
}
.model-5 .float-btn-group.open .btn-list {
  -webkit-transition: -webkit-transform 0.4s, opacity 0.3s;
  -webkit-transition-delay: 0.1s, 0.1s;
  -webkit-transition: -webkit-transform 0.4s 0.1s, opacity 0.3s 0.1s;
          transition: transform 0.4s 0.1s, opacity 0.3s 0.1s;
  -ms-transform: rotate(0);
  -webkit-transform: rotate(0);
  transform: rotate(0);
  width: 270px;
  left: -110px;
  opacity: 1;
}

.model-6 {
  background: #546e7a;
}
.model-6 .float-btn-group {
  float: none;
  margin: auto;
  width: 50px;
}
.model-6 .float-btn-group .icon-bars {
  -moz-transition: 0.3s 1.3s;
  -o-transition: 0.3s 1.3s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 1.3s;
  -webkit-transition: 0.3s 1.3s;
          transition: 0.3s 1.3s;
}
.model-6 .float-btn-group .btn-list {
  width: 50px;
  height: 50px;
  left: 0;
  top: 0;
}
.model-6 .float-btn-group .btn-list .btn-float {
  position: absolute;
  -ms-transform: scale(0, 0);
  -webkit-transform: scale(0, 0);
  transform: scale(0, 0);
  left: 0;
  top: 0;
  margin: auto;
}
.model-6 .float-btn-group .btn-list .btn-float:nth-child(1) {
  -moz-transition: 0.3s 0.3s;
  -o-transition: 0.3s 0.3s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.3s;
  -webkit-transition: 0.3s 0.3s;
          transition: 0.3s 0.3s;
}
.model-6 .float-btn-group .btn-list .btn-float:nth-child(2) {
  -moz-transition: 0.3s 0.6s;
  -o-transition: 0.3s 0.6s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.6s;
  -webkit-transition: 0.3s 0.6s;
          transition: 0.3s 0.6s;
}
.model-6 .float-btn-group .btn-list .btn-float:nth-child(3) {
  -moz-transition: 0.3s 0.9s;
  -o-transition: 0.3s 0.9s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 0.9s;
  -webkit-transition: 0.3s 0.9s;
          transition: 0.3s 0.9s;
}
.model-6 .float-btn-group .btn-list .btn-float:nth-child(4) {
  -moz-transition: 0.3s 1.2s;
  -o-transition: 0.3s 1.2s;
  -webkit-transition: 0.3s;
  -webkit-transition-delay: 1.2s;
  -webkit-transition: 0.3s 1.2s;
          transition: 0.3s 1.2s;
}
.model-6 .float-btn-group.open .icon-bars {
  -webkit-transition: 0.3s;
  transition: 0.3s;
}
.model-6 .float-btn-group.open .btn-list .btn-float {
  -ms-transform: scale(0.9, 0.9);
  -webkit-transform: scale(0.9, 0.9);
  transform: scale(0.9, 0.9);
}
.model-6 .float-btn-group.open .btn-list .btn-float:nth-child(1) {
  left: -75px;
  top: 0px;
}
.model-6 .float-btn-group.open .btn-list .btn-float:nth-child(2) {
  left: -40px;
  top: -65px;
}
.model-6 .float-btn-group.open .btn-list .btn-float:nth-child(3) {
  left: 40px;
  top: -65px;
}
.model-6 .float-btn-group.open .btn-list .btn-float:nth-child(4) {
  left: 75px;
  top: 0px;
}
.model-6 .float-btn-group.open .btn-list .btn-float:hover {
  -webkit-transition: 0.3s;
  transition: 0.3s;
  text-shadow: 1px 4px 1px #666;
}