header {
    width: auto;
    height: auto;
    justify-content: center;
}

header h1 {
    font-size: 1.5em;
    margin: 0;
}

header p {
    font-size: 0.8em;
    margin: 0;
}

main {
    margin: 0 auto;
    padding: 0 10%;
    justify-content: center;
    align-items: center;
}

.lp-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    margin: 0 auto;
    display: block;
}

.wrap,
.footer-in,
#footer-in {
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 0 !important;
    box-sizing: border-box;
}

.c-btn {
    background-color: #ef5350;
    color: #fff;
}

.footer-bottom-content {
    margin-bottom: 200px;
}

.post_title {
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
    margin-bottom: 20px;
    font-size: 24px;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header,
footer {
    background: #251a65;
    color: white;
    padding: 1em;
    text-align: center;
}

nav a {
    margin: 0 10px;
    color: white;
    text-decoration: none;
    font-size: 10px;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2em;
}

.article-list {
    margin-top: 2em;
}

.article {
    background: white;
    margin-bottom: 1.5em;
    padding: 1em;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.article h2 {
    margin-top: 0;
}

.footer-links a {
    color: white;
    margin: 0 10px;
}

.article h2 a {
    color: inherit;
    text-decoration: none;
}

.article h2 a:hover {
    text-decoration: underline;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table tr:nth-of-type(2n+1) {
    background-color: #f4f5f7;
}

strong {
    font-weight: bolder;
}

img {
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    display: block;
}

.st-catgroup {
    font-size: 12px;
    line-height: 18px;
    margin: 0;
    padding: 5px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.st-catid-ad {
    font-size: 13px;
    line-height: 1.5em;
    display: inline-block;
    word-break: break-word;
    padding: 6px 8px;
    margin-top: 5px;
    border-radius: 2px;
    text-decoration: none;
    background: #fafafa;
    color: #999;
    display: inline-flex;
}
.ranking_container {
  position: relative;
  display: inline-block;
  width: 100%;
}

.ranking_container img.lp-image {
  display: block;
  width: 100%;
  height: auto;
}

.ranking_text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.6); /* 半透明の黒 */
  color: #fff;
  padding: 10px 20px;
  text-align: center;
  border-radius: 6px;
  max-width: 450px;
  box-sizing: border-box;
  width: 90%;
  font-weight: bold;
}