html{
  background-image: url("../images/bg01.jpg");
}

body{
  background-color:burlywood;
  max-width: 800px;
  margin: 10px auto auto auto;
  padding: 0 20px 20px 20px;
  border: 7px solid black;
}

a{
  color:darkred;
}

h1 {
  text-align: center;
  font-size: 2.4rem;
  margin: 3rem auto 2.5rem;
  font-weight: 700;
  color: #3a2f28;
}

h2 {
  font-size: 1.6rem;
  margin: 3rem 0 1.2rem;
  padding: 0.7rem 1.1rem;
  background: rgba(255, 255, 255, 0.75);
  border-left: 8px solid #6b4f3a;
  border-bottom: 1px solid #cbb8a6;
  border-radius: 6px;
  color: #3b312a;
}

h3 {
  font-size: 1.25rem;
  margin: 2.2rem 0 0.8rem;
  padding-left: 0.7rem;
  border-left: 4px solid #8c7a67;
  color: #4a3f37;
  font-weight: 600;
}

p {
  margin: 1rem 0;
  font-size: 1rem;
}

code {
  font-family: "JetBrains Mono", "Fira Code", Consolas, monospace;
  background: rgba(44, 38, 34, 0.12);
  color: #3a2f28;
  padding: 0.08em 0.4em;
  border-radius: 4px;
  font-size: 0.92em;
  line-height: 1;
  display: inline;
  vertical-align: baseline;
}

pre {
  margin: 1.5rem 0;
  padding: 1rem 1.1rem;
  background: rgba(44, 38, 34, 0.10);
  border: 1px solid #cbb8a6;
  border-left: 6px solid #6b4f3a;
  border-radius: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ブロックの中の code は「インライン用の装飾」を無効化して、読みやすさに寄せる */
pre code {
  display: block;
  padding: 0;
  margin: 0;
  background: transparent;
  color: #2b2622;
  font-size: 0.95em;
  line-height: 1.7;
  white-space: pre;
}

textarea{
  width: 300px;
  height: 100px;
}

img {
  max-width: 600px;
  max-height: 600px;
  width: auto;
  height: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

table th,
table td {
  border: 1px solid #6b4f3a;
  padding: 0.6rem 0.8rem;
  text-align: left;
}

table th {
  background: rgba(107, 79, 58, 0.08);
  font-weight: 600;
}

.right{
  text-align: right;
}

.left{
  text-align: left;
}

.center{
  text-align: center;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.hitokoto{
  margin: 10px;
}

.date{
  text-align: right;
  font-style: italic;
}

.formula{
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.back{
  margin-top: 30px;
  text-align: left;
}

.full_img{
  width: 100%;
  max-width: 100%;
}

.txt{
  margin: 30px 15px 40px 15px;
}

.txt_w{
  margin: 30px 15px 40px 15px;
}

.txt_w li{
  margin: 15px 0px 5px 0px;
}

.hor_list a{
  font-size: small;
  display: inline-block;
  width: 24%;
  text-align: center;
}

.hor_list span{
  font-size: small;
  display: inline-block;
  width: 24%;
  text-align: center;
}

.hitokoto_id{
  padding-left: 5px;
  border-left: brown 4px solid;
}