.footer_bk {
  position: relative;
  overflow: hidden;
}
.footer_body {
  padding: 2em;
}
.footer_body ul {
  list-style: none;
}
.footer_body li {
  margin-bottom: 0.5em;
}
.footer_footer {
  background-color: dodgerblue;
  padding: 2em;
}
.copy_l {
  text-align: center;
  color: #fff;
}
.footer_ul {
  text-align: right;
}
.footer_ul li {
  display: inline-block;
  margin-left: 2em;
}
.footer_ul a {
  color: #fff;
}
#footer li a {
  font-size: 1em;
}
.footer_main {
  border-bottom: solid 1px #b6d9fe;
  width: 80%;
  margin-top: 20px;
}
#particles {
  left: 0;
  padding: 0;
  top: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  background-color: aliceblue;
  z-index: -1;
}

/*--ページトップへ--*/
#page-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  font-size: 77%;
}
.top_rt_text {
  font-size: 1.3em;
  font-weight: bold;
}
#page-top a {
  opacity: 0.5;
  text-decoration: none;
  color: #555;
  width: 100px;
  padding: 30px 0;
  text-align: center;
  display: block;
  border-radius: 5px;
  -webkit-transition: all 0.2s ease;
  -moz-transition: all 0.2s ease;
  -o-transition: all 0.2s ease;
  -ms-transition: all 0.2s ease;
  transition: all 0.2s ease;
}
#page-top img {
  width: 60%;
  margin-bottom: 10px;
  -webkit-transition: all 0.2s ease;
  -moz-transition: all 0.2s ease;
  -o-transition: all 0.2s ease;
  -ms-transition: all 0.2s ease;
  transition: all 0.2s ease;
}
#page-top a:hover {
  text-decoration: none;
  opacity: 1;
}
.pmake {
  text-align: right;
}
.pmake img {
  margin-top: 3em;
  margin-right: 1em;
  text-align: center;
}

.mark_box {
  height: 30%;
  width: 30%;
  display: table-cell;
  text-align: center;
}

.mark_img {
  width: 20em;
  margin-top: 10em;
  text-align: center;
}
.mark_img span {
  width: 100%;
  font-size: 0.75em;
  text-align: center !important;
}
@media screen and (max-width: 991px) {
  .mark_box {
    width: 12em;
  }
}
@media screen and (max-width: 767px) {
  .mark_box {
    float: right;
  }
}
@media screen and (max-width: 401px) {
  .mark_box {
    height: 8em;
    width: 10em;
    float: right;
  }
}
/*--/ページトップへ--*/