<div class="contents">text</div>
<ul class="cp_snslink04">
<li class="cp_link facebook"><a href="#"><span>Facebook</span></a></li>
<li class="cp_link twitter"><a href="#"><span>Twitter</span></a></li>
<li class="cp_link google"><a href="#"><span>Google+</span></a></li>
<li class="cp_link instagram"><a href="#"><span>instagram</span></a></li>
</ul>
.cp_snslink04 {
position: fixed;
top: 50%;
left: 0;
display: inline-block;
margin: 0;
padding: 0;
list-style-type: none;
-webkit-transform: translateY(-50%);
transform: translateY(-50%);
}
.cp_snslink04 .cp_link {
position: relative;
display: block;
margin: 0;
padding: 0;
cursor: pointer;
text-align: center;
text-decoration: none;
color: #ffffff;
border-bottom: 1px solid #ffffff;
background: #3f51b5;
}
.cp_snslink04 .cp_link::before {
font-family: FontAwesome;
display: inline-block;
width: 40px;
height: 28px;
padding-top: 12px;
}
.cp_snslink04 .cp_link:last-of-type {
border-bottom: none;
}
/* pop-up */
.cp_snslink04 .cp_link span {
line-height: 0.75em;
position: absolute;
top: 0.5em;
right: -25px;
left: -25px;
visibility: hidden;
min-width: 7em;
height: 1.5em;
padding: 5px 7px;
-webkit-transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
opacity: 0;
color: #ffffff;
border-radius: 2px;
}
.cp_snslink04 .cp_link:hover span {
left: 50px;
visibility: visible;
opacity: 1;
}
/* facebook */
.cp_snslink04 .facebook:hover,
.cp_snslink04 .facebook:hover span {
background: #3b5997;
}
.cp_snslink04 .cp_link.facebook::before {
content:'\f09a';
}
/* twitter */
.cp_snslink04 .twitter:hover,
.cp_snslink04 .twitter:hover span {
background: #55acee;
}
.cp_snslink04 .cp_link.twitter::before {
content:'\f099';
}
/* google+ */
.cp_snslink04 .google:hover,
.cp_snslink04 .google:hover span {
background: #dd4b39;
}
.cp_snslink04 .cp_link.google::before {
content:'\f0d5';
}
/* instagram */
.cp_snslink04 .instagram:hover,
.cp_snslink04 .instagram:hover span {
background: linear-gradient(45deg, #fdf497,#fd5949,#d6249f,#285aeb );
}
.cp_snslink04 .cp_link.instagram::before {
content:'\f16d';
}