@charset "utf-8";
article {
    min-height: 500px;
}
.main {
    max-width: 748px;
    width: cal(100% - 20px);
    margin: 0 auto;
    padding: 10px;
}
h1 {
    margin: 10px 0 10px 0;
    padding: 0 0 10px 0;
    border-bottom: 3px double #f8a055;
    letter-spacing: 0.3rem;
}
h2,h3 {
    margin: 10px 0 10px 0;
    padding: 0 0 10px 0;
    border-bottom: 1px solid #f8a055;
    letter-spacing: 0.3rem;
}
h1:first-letter,
h2:first-letter,
h3:first-letter {
  font-size: 1.6rem;
  color: #f8a055;
}
.flex-img {

}
.flex-img img {
    max-width: 748px;
    width: 100%;
    height: auto;
    margin: 10px 0;
}