/* style.css */
body { 
    font-family: 'Helvetica Neue', 
    sans-serif; line-height: 1.6; 
    background-image:  linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), url(ソ連背景.png);
    max-width: 800px;
     margin: auto; 
   
    padding: 20px; }
section { margin-bottom: 40px; border-bottom: 1px solid #eee; padding-bottom: 20px; }
h1 { color: #8b0000; } /* ソ連をイメージしたダークレッド */
.history-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.history-section {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #ddd;
}

.history-section h2 {
  color: #333;
  border-left: 5px solid #8b0000;
  padding-left: 10px;
}