html {
  font-family: Arial, Helvetica, sans-serif;
}

.flex {
  display: flex;
  flex-wrap: wrap;
  padding-bottom: 10px;
  padding-top: 10px;
}

.no-dot {
  list-style-type: none;
}

header a,
header h1,
header h2,
header h3 {
  margin-block-end: 0px;
  margin-block-start: 0px;
}

.flex-right {
  display: flex;
  margin-left: auto;
  vertical-align: baseline;
}

.pagination li,
header nav li {
  list-style-type: none;
  display: inline-block;
  margin-left: 5px;
}

.subtitle {
  margin-left: 5px;
}

.main,
header,
footer {
  margin-right: 10px;
  margin-left: 10px;
  margin-top: 5px;
  margin-bottom: 5px;
  display: block;
}

.card {
  border: 1px solid black;
  padding: 10px;
  margin: 5px;
  width: 300px;
  box-sizing: border-box;
}

.card h3,
.card p {
  margin-block-end: 5px;
  margin-block-start: 5px;
}

.card-box {
  width: 100%;
}

.card-date {
  text-align: right;
}

.pad-l-5px {
  padding-left: 5px;
}

.pad-r-5px {
  padding-right: 5px;
}

/* toc */

.toc-box {
  border: 1px solid black;
  padding: 5px;
}

toc {
  display: none;
}

toc li {
  list-style-type: none;
}

toc ul {
  margin-left: 0px;
  padding-left: 0;
}

toc ul ul {
  margin-left: 0px;
  padding-left: 15px;
}