<ul>
	<li><a href="#" class="btn gradient1">button</a></li>
	<li><a href="#" class="btn gradient2">button</a></li>
	<li><a href="#" class="btn gradient3">button</a></li>
</ul>
body {
	min-height: 100vh;
	margin: 0;
	padding: 0;
	display: flex;
	justify-content: center;
	align-items: center;
}
ul {
	flex-basis: 80%;
	padding: 0;
	margin: 0;
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
}
ul li {
	flex-basis: 32%;
	list-style-type: none;
}
a {
  text-decoration: none;
}


.btn {
	font-size: 18px;
  color: #fff;
  padding: 20px 50px;
  display: block;
  border-radius: 50px;
	text-align: center;
  background-size: 180% auto;
  transition: all .3s ease-out;
}
.btn:hover {
  background-position: right center;
}
.gradient1 {
  background-image: -moz-linear-gradient(left, #736EFE 0%, #5EFCE8 100%);
  background-image: -webkit-linear-gradient(left, #736EFE 0%, #5EFCE8 100%);
  background-image: linear-gradient(to right, #736EFE 0%, #5EFCE8 100%);
}
.gradient2 {
  background-image: -moz-linear-gradient(left, #E96D71 0%, #FAD7A1 100%);
  background-image: -webkit-linear-gradient(left, #E96D71 0%, #FAD7A1 100%);
  background-image: linear-gradient(to right, #E96D71 0%, #FAD7A1 100%);
}
.gradient3 {
  background-image: -moz-linear-gradient(left, #00E4FF 0%, #69FF97 100%);
  background-image: -webkit-linear-gradient(left, #00E4FF 0%, #69FF97 100%);
  background-image: linear-gradient(to right, #00E4FF 0%, #69FF97 100%);
}
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