* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 62.5%;
}

body {
  background-color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  color: #444;
  font-family: -apple-system, BlinkMacSystemFont, Roboto, "Segoe UI", "Helvetica Neue", HelveticaNeue, YuGothic,
 "Yu Gothic Medium", "Yu Gothic", Verdana, Meiryo, sans-serif;
}

a {
  text-decoration: none;
  color: #444;
}

i {
  font-family: "FontAwesome";
}

header {
  position: relative;
  width: 100%;
  overflow: hidden;
  background-color: #37474f;
  background-image: url(../img/back.png);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

header div {
  position: absolute;
  top: 48%;
  left: 20%;
}

header div h1,
header div p {
  color: #fff;
  line-height: 1.5;
}

header div p {
  font-size: 2rem;
}

.work {
  overflow: hidden;
}

.work .wrap_back_table {
  position: relative;
  margin: 8% 0;
  padding: 80px 0;
}

.work .wrap_back_table:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120%;
  height: 80%;
  margin: 3% -10% 0;
  background: #011931;
  -webkit-transform-origin: left center;
  -ms-transform-origin: left center;
  transform-origin: left center;
  -webkit-transform: rotate(3deg);
  -ms-transform: rotate(3deg);
  transform: rotate(3deg);
  z-index: -1;
}

.work .wrap_back_table:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120%;
  height: 80%;
  margin: 3% -10% 0;
  background: #37474f;
  -webkit-transform-origin: right center;
  -ms-transform-origin: right center;
  transform-origin: right center;
  -webkit-transform: rotate(-3deg);
  -ms-transform: rotate(-3deg);
  transform: rotate(-3deg);
  z-index: -2;
}

.work .inner_back_table {
  box-sizing: boder-box;
  width: 100%;
  max-width: 640px;
  height: 100%;
  margin: 0 auto;
  padding: 10rem 1rem 10rem 1rem;
  color: #fff;
  text-align: center;
}

.work table {
  width: 100%;
  margin: auto;
}

.work table th {
  font-weight: normal;
}

.work table th,
.work table td {
  padding: 2rem;
  text-align: left;
}

.work table ul li {
  list-style-type: none;
  line-height: 2;
}

footer {
  background-color: #011931;
  text-align: center;
  color: #fff;
  padding: 5rem 0;
}

@media screen and (max-width: 1024px) {
  header {
    background-image: url(../img/back_sp.png);
  }
  header div {
    left: 10%;
  }
  header div h1,
  header div p {
    font-size: 2rem;
  }
  header div p {
    font-size: 1.8rem;
  }
  .work .inner_back_table {
    padding: 5rem 1rem 10rem 1rem;
  }
}