* {
  font-family: 'Lato', 'Noto Sans JP', 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, 'ＭＳ Ｐゴシック', 'MS PGothic', sans-serif;
  margin:0; padding:0;
}
a:link, a:visited, a:hover, a:active {
color: white;
text-decoration: none;
}
header {
  height: 100px;
  width: 100%;
  padding: 15px 0;
  background-color: #313131;
  color: white;
  text-align: center;
}
header .headline{
    line-height: 100px;
    font-size: 30px;
}
.nav-list {
    line-height: 100px;
    list-style: none;
    font-weight: bold;
}
.nav-list-item {
  list-style: none;
  display: inline-block;
  margin: 0 20px;
}
main{
  width: 100%;
  min-height: 256px;
  background-color: #313131;
  text-align: center;
}
table {
  margin-left: auto;
  margin-right: auto;
  margin-top: auto;
  margin-bottom: auto;
}
td {
  text-align: middle;
  vertical-align: middle;
}

footer{
    width: 100%;
    height: 100px;
    background-color: #313131;
    color: white;
    text-align: center;
}
ul.footer-menu li {
  line-height: 50px;
  display: inline;
}