h3 { position: relative; padding: 0.1em 0.5em; background: -webkit-linear-gradient(to right, rgb(255, 186, 115), transparent); background: linear-gradient(to right, rgb(255, 186, 115), transparent); color: #545454; } h4 { /*線の種類(二重線)太さ 色*/ border-bottom: double 5px #FFC778; } はじめに 天冲殺・大殺界・空亡とは? なぜ「怖…