<div class="contents">text</div>
<ul class="cp_snslink06">
<li class="cp_link facebook"><a href="#"><div class="nav-label"><span>facebook Button</span></div></a></li>
<li class="cp_link twitter"><a href="#"><div class="nav-label"><span>X Button</span></div></a></li>
<li class="cp_link instagram"><a href="#"><div class="nav-label"><span>instagram Button</span></div></a></li>
</ul>

body {
  /*設置する親要素ページ全体ならbodyなど*/
  position: relative;
  height: 100vh;
  margin: 0;
  padding: 0;
}
.contents {
  /*サンプルはfixedの確認のためにheight指定しています。*/
  height: 2000px;
}
/*SNSリンクブロックの位置設定*/
.cp_snslink06 {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  display: block;
  margin: 0;
  padding: 0;
}
/*それぞれのSNS iconの設定*/
.cp_snslink06 .cp_link {
  position: relative;
  left: -150px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin: 5px;
  padding: 0 50px 0 10px;
  height: 45px;
  border-radius: 0 30px 30px 0;
  background: #80cbc4;
  transition: all 1s;
}
.cp_snslink06 .cp_link a {
  text-decoration: none;
  color: #009688;
}
/*SNS各種ロゴ背景*/
.cp_snslink06 .cp_link.facebook::before,
.cp_snslink06 .cp_link.twitter::before,
.cp_snslink06 .cp_link.instagram::before {
  position: absolute;
  content: '';
  right: 8px;
  background: #009688;
  width: 35px;
  height: 35px;
  border-radius: 50%;
}
/*SNS各種ロゴ*/
.cp_snslink06 .cp_link.facebook::after,
.cp_snslink06 .cp_link.twitter::after,
.cp_snslink06 .cp_link.instagram::after {
  position: absolute;
  content: '';
  right: 16px;
  background-size: contain;
  background-repeat: no-repeat;
  width: 20px;
  height: 20px;
}
/*facebook*/
.cp_snslink06 .cp_link.facebook::after {
  background-image: url(facebook_logo_secondary.svg);
}
/*twitter*/
.cp_snslink06 .cp_link.twitter::after {
  background-image: url(x-logo.svg);
}
/*instagram*/
.cp_snslink06 .cp_link.instagram::after {
  background-image: url(instagram_glyph_white.svg);
}
/* hover時の動きの設定 */
.cp_snslink06 .cp_link:hover {
  left: -5px;
  background: #009688;
}
.cp_snslink06 .cp_link:hover a {
  color: #ffffff;
}
/*SNS各種ロゴを回転させる*/
.cp_snslink06 .cp_link:hover::before,
.cp_snslink06 .cp_link:hover::after {
  transition: all 1s;
  transform: rotate(360deg);
}
/*SNS各種ロゴ背景を変える*/
/* facebook */
.cp_snslink06 .cp_link.facebook:hover::before {
  background: #0866ff;
}
/* twitter */
.cp_snslink06 .cp_link.twitter:hover::before {
  background: #000000;
}
/* instagram */
.cp_snslink06 .cp_link.instagram:hover::before {
  background: linear-gradient(45deg, #FF7A00 0%, #FF0169 50.06%, #D300C5 99.36%);
}