body {
  font-family: Helvetica,Tahoma;
}

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

.aos-all {
  width: 1000px;
  max-width: 98%;
  margin: 0 auto 0 auto;
}

.aos-item {
  display: inline-block;
  float: left;
  width: 33.3333%;
  height: 300px;
  padding: 20px;
}

.aos-item__inner {
  position: relative;
  width: 100%;
  height: 100%;
  float: left;
  background: #1da4e2;
  line-height: 260px;
  text-align: center;
  color: #fff;
}

@media screen and (max-width: 800px) {
  .aos-item {
    width: 50%;
  }
}


.float{
	position:fixed;
	width:60px;
	height:60px;
	bottom:80px;
	right:40px;
	background-color:#25d366;
	color:#FFF;
	border-radius:50px;
	text-align:center;
  font-size:30px;
	box-shadow: 2px 2px 3px #999;
  z-index:100;
}

.my-float{
	margin-top:16px;
}