.fa-facebook:before, .fa-twitter:before, .fa-hatena:before, .fa-line:before, .fa-pocket:before, .fa-pinterest:before
{
  font-family: helvetica neue,helvetica,arial,sans-serif;
  font-weight: bold;
  font-size: 14px;
}
.fa-facebook:before {
  content: "facebook";
}
.fa-twitter:before {
  content: "X";
}
.fa-hatena:before {
  content: "B!";
}
.fa-line:before {
  content: "Line";
}
.fa-pocket:before {
  content: "pocket";
}
.fa-pinterest:before {
  content: "pinterest";
}
.button-area {
  text-align: center;
  margin-top: 7px;
}
.button-area-title {
  text-align: center;
  padding: 0.7em;
}
.button-area li a {
  padding: 2px;
  display: block;
  text-align: center;
  text-decoration: none;
  color: #fff;
  border-radius: 4px; 
}
.facebook a{
  background-color: #3b5998;
}
.twitter a {
  background-color: #3e4142;
}
.hatena a{
  background-color: #008fde;
}
.line a{
  background-color: #1dcd00;
}
.pocket a{
  background-color: #ea5a6c;
}
.pinterest a{
  background-color: #999000;
}
.button-area ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.button-area li {
  float: left;
  width: 16%;
  margin: 0.2%;
}
.button-area ul:after {
  display: block;
  clear: both;
}
footer {
    background-color: #063306;
    width: 100%;
    height: 40px;
    position: fixed;
    bottom: 0;
}