* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
line-height: 1.8;
color: #333;
background-color: #f5f5f5;
}
header {
background-color: #fff;
padding: 2rem 1rem;
text-align: center;
border-bottom: 1px solid #e0e0e0;
}
header h1 {
font-size: 1.8rem;
font-weight: 600;
color: #222;
}
.header-image {
width: 100%;
max-height: 400px;
object-fit: cover;
display: block;
}
main {
max-width: 700px;
margin: 2rem auto;
padding: 2.5rem 1.5rem;
background-color: #fff;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
main h2 {
font-size: 1.6rem;
font-weight: 600;
color: #222;
margin-top: 2.5rem;
margin-bottom: 1.2rem;
padding-bottom: 0.5rem;
border-bottom: 2px solid #333;
}
main h2:first-child {
margin-top: 0;
}
main h3 {
font-size: 1.3rem;
font-weight: 600;
color: #333;
margin-top: 2rem;
margin-bottom: 1rem;
padding-left: 0.8rem;
border-left: 4px solid #666;
}
main h4 {
font-size: 1.1rem;
font-weight: 600;
color: #444;
margin-top: 1.5rem;
margin-bottom: 0.8rem;
}
main p {
margin-bottom: 1.5rem;
}
main img {
max-width: 100%;
height: auto;
display: block;
margin: 2rem auto;
}
main ul,
main ol {
margin: 1.5rem 0 1.5rem 2rem;
}
main li {
margin-bottom: 0.5rem;
}
main table {
width: 100%;
border-collapse: collapse;
margin: 1.5rem 0;
}
main table th,
main table td {
padding: 0.8rem;
border: 1px solid #ddd;
text-align: left;
}
main table th {
background-color: #f8f8f8;
font-weight: 600;
}
main a {
color: #0066cc;
text-decoration: none;
}
main a:hover {
text-decoration: underline;
}
main strong {
font-weight: 600;
}
footer {
background-color: #333;
color: #fff;
padding: 2rem 1rem;
margin-top: 3rem;
}
footer nav {
max-width: 700px;
margin: 0 auto;
text-align: center;
}
footer nav ul {
list-style: none;
display: flex;
flex-wrap: wrap;
justify-content: center;
gap: 1.5rem;
}
footer nav a {
color: #fff;
text-decoration: none;
transition: opacity 0.3s;
}
footer nav a:hover {
opacity: 0.7;
}
footer .sitename {
text-align: center;
margin-top: 20px;
color: #fff;
}
footer .sitename a{
color: #fff;
text-decoration: none;
}
@media (max-width: 768px) {
header h1 {
font-size: 1.5rem;
}
main {
margin: 1rem;
padding: 1.5rem 1rem;
}
main h2 {
font-size: 1.4rem;
}
main h3 {
font-size: 1.2rem;
}
footer nav ul {
flex-direction: column;
gap: 1rem;
}
}