* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-family: 'Open Sans', sans-serif; line-height: 1.6; font-size: 17px; }
body { color: #777; background-color: #f5f5f5; overflow-x: hidden; }
.container { margin: 0 auto; padding: 0 1.8rem; }
.site-header { background-color: #3498db; color: #fff; padding: 1.3rem 0; box-shadow: 0 3px 7px rgba(0,0,0,.2); }
.logo { font-size: 1.5rem; font-weight: 800; margin: 0 auto; display: flex; justify-content: center; }
.content { padding: 1.8rem; min-height: 68vh; margin: 0 auto; max-width: 100%; width: 1250px; }
.content p { margin-bottom: 1.3rem; font-size: 1.05rem; }
.content img { max-width: 100%; height: auto; margin: 0 auto; display: block; border-radius: 5px; box-shadow: 0 3px 15px rgba(0,0,0,.2); }
.site-footer { background-color: #2980b9; color: #fff; padding: 2.8rem 0; display: flex; justify-content: center; }
.links { margin-bottom: 1.3rem; font-weight: 800; }
.links a { margin: 0 18px; text-decoration: none; color: #fff; font-size: 1.05rem; }
.copyright { opacity: .8; font-size: .9rem; }

@media (max-width: 768px) {
  html { font-size: 15px; }
  .container { padding: 0 1.3rem; }
  .logo { font-size: 1.3rem; margin: 0 auto; }
}