:root {
  --white: #ffffff;
  --black: #000000;
  --grey: #e0e0e0;
  --link: #0000FF;
  --red: #FF0000;

  /* spacing */
  --header-height: ;
}

* {
  font: normal normal normal 15px serif;
}

@media screen and (width >= 820px) {
  * {
  font: normal normal normal 16px serif;
  }
}

body {
  padding: 10px;
  padding-top: 0;
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
}

@media screen and (width >= 650px) {
  body {
  padding: 15px;
  padding-top: 0;
  }
}



/* header */

header {
  z-index: 10;
  position: sticky;
  top: 5px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 5px;
}

header > * {
  margin: 0;
  padding: 5px;
  background-color: var(--white);
  border-bottom: 1px outset var(--black);
  border-right: 1px outset var(--black);
}

header > p {
  width: fit-content;
}

nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

nav ul li {
  display: inline-block;
  padding: 0;
}

nav a {
  color: var(--link);
}



/* section */
/* credit to Tsuneo Yoshioka and Erick Xenes for h1 line
   https://stackoverflow.com/questions/5214127/ */

section {
  scroll-margin-top: var(--header-height);
}

h1 {
  z-index: 0;
  display: flex;
  flex-direction: row;
  font-size: medium;
  padding-top: 15px;
  padding-right: 5px;
  white-space: pre;
}

h1:after{
  content: "";
  flex: 1 1;
  border-bottom: 1px solid;
  margin: auto;
}



/* listings */

.grid {
  display: grid;
  grid-template-columns: 50% 50%;
}

@media screen and (width >= 650px) {
  .grid {
    grid-template-columns: 33% 33% 33%;
  }
}

@media screen and (width >= 820px) {
  .grid {
    grid-template-columns: 25% 25% 25% 25%;
  }
}

.listing {
  position: relative;
  z-index: 5;
  padding: 5px;
}

.listing p {
  z-index: 7;
  width: fit-content;
  padding: 3px;
  margin: 5px;
  background-color: var(--white);
  border-bottom: 1px outset var(--black);
  border-right: 1px outset var(--black);
}

.listing_image {
  z-index: 6;
  width: 100%;
  height: auto;
}

.listing_number {
  position: absolute;
}

.listing .listing_description {
  margin-top: 1px;
}

.listing_price_container {
  position: relative;
  width: min-content;
}

.listing_price_container .listing_price_cover {
  z-index: 8;
  position: absolute;
  background-color: var(--red);
  color: var(--white);
  padding-top: 0;
  padding-bottom: 0;
  margin: 0;
  text-align: center;
  top: 3px;
  width: calc(100% - 8px) ;
}



/* order information */

#bold {
  font-weight: bold;
}

#order_info p {
  padding: 10px;
  padding-top: 0;
  margin-bottom: 25px;
  width: fit-content;
  background-color: var(--white);
  border-bottom: 1px outset var(--black);
  border-right: 1px outset var(--black);
}



/* about */

#about_contents {
  display: flex;
  flex-wrap: nowrap;
  flex-direction: row;
  justify-content: left;
  gap: 15px;
}

#about_contents > * {
  display: inline-block;
}

#about_contents > img {
  max-width: 45%;
  max-height: 425px;
}


/* footer */

#footer_contents {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  justify-content: space-between;
  padding: 5px;
  gap: 15px;
}

@media screen and (width >= 650px) {
  #footer_contents {
    flex-direction: row;
    
  }
}

footer ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

footer ul li {
  display: block;
  padding: 0;
}

footer ul li h2 {
  margin: 0;
}

footer ul li img {
  height: 1em;
  margin: 0;
  display: inline;
  vertical-align: text-bottom;
}