#bird { max-width: 60em; margin: 0 auto; }
#bird #link01 h2 { font-size: clamp(1.3em, 4vw, 1.5em); text-align: center; margin-bottom: 1em; }
#bird #link01 h3 { font-size: clamp(1em, 4vw, 1.2em); text-align: center; margin-top: 4em; margin-bottom: 1em; }
#bird #link02 { margin-top: 5em; text-align: center; display: block; }
#bird #link02 .sec01 { display: inline-block; }
#bird #link02 .sec01 dl { text-align: left; display: grid; grid-template-columns: 5em 1fr; }
@media only screen and (max-width: 768px) { #bird #link02 .sec01 dl { grid-template-columns: 4em 1fr; } }
#bird #link02 .sec01 dl dt { padding: 0.5em 0; font-weight: bold; }
#bird #link02 .sec01 dl dd { padding: 0.5em 0; }