@charset "utf-8";

/* 3) background color of the browser window */
html {
  background-image: url("bg.jpg");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

/* 4) body styles */
body {
  font-family: Verdana, Geneva, sans-serif;
  color: rgb(91, 91, 91);
  background-color: ivory;
  width: 90%;
  margin-left: auto;
  margin-right: auto;
}


/* 5) header section */
header {
  text-align: center;
  padding: 20px;
}

/* 6) h2 size */
h2 {
  font-size: 1.3em;
  text-shadow: 4px 6px 5px gray;
  margin-top: 30px;
}

h1 {
  text-shadow: 4px 6px 5px gray;
}



/* 7) nav section */
/*
nav {
  background-color: hsl(210, 30%, 30%);
  padding: 15px;
  text-align: center;
}
*/

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

nav li {
  display: block;
  width: 20%;
  float: left;
}

nav::after {
  content: "";
  display: block;
  clear: both;
}



/* 8) nav links */
nav a {
  display: block;
  background-color: hsl(210, 30%, 30%);
  line-height: 2.8em;
  text-decoration: none;
  text-align: center;
  color: rgb(240, 240, 240);
}


/* 9) hover effect */
nav a:hover {
  background-color: hsl(210, 35%, 40%);
  color: rgb(255, 255, 255);
}


/* 10) main padding */
main {
  padding: 20px;
  margin-top: 35px;
}


/* 11) images inside main */
main > img {
  width: 25%;
  padding: 25px;
  float: right;
}


/* header image */
header img {
  width: 100%;
  padding: 0;
  display: block;
}


/* 12) footer */
body > footer {
  background-color: hsl(210, 30%, 30%);
  color: rgba(102, 102, 102, 0.6);
  font-weight: bold;
  font-size: 0.9em;
  line-height: 3em;
  text-align: center;
  margin-top: 10px;
  padding: 10px;
  clear: both;
}
.education-list {
  list-style-type: square;
}

/* Vacation flex gallery */
.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin: 20px 0;
  padding: 15px;
  margin-bottom: 40px;
}

.gallery img {
  flex: 0 0 calc(25% - 15px);  /* 4 columns */
  max-width: calc(25% - 15px);
  height: 220px;              
  object-fit: cover;           
  display: block;
  border-radius: 10px;
}



@media only screen and (max-width: 768px) {

  body {
    width: 100%;
    margin: 0;
  }

  nav li {
    float: none;
    width: 100%;
    font-size: x-large;
  }

  nav a {
    border-bottom: 1px solid black;
  }

  main > img {
  width: 90%;
  float: none;
}

  .gallery img {
    flex: 0 0 calc(50% - 15px);   /* 2 columns */
    max-width: calc(50% - 15px);
  }


}


@media only screen and (min-width: 769px) {

}

@media only screen and (max-width: 480px) {
  .gallery img {
    flex: 0 0 100%;     /* 1 column */
    max-width: 100%;
  }
}



/* Family table styling */

.family-table {
  width: 100%;                
  border-collapse: collapse;
  background-color: white;    
}

.family-table th,
.family-table td {
  border: 2px solid #333;      
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

.family-table thead th {
  background-color: hsl(210, 30%, 85%);
}

.family-table tfoot td {
  background-color: hsl(210, 30%, 85%);
  text-align: center;
}

.family-table {
  margin-top: 15px;
}

.family-table caption {
  font-weight: bold;
  padding: 8px 0;
}


/* Responsive table */

@media only screen and (max-width: 768px) {

  .family-table,
  .family-table tbody,
  .family-table tr,
  .family-table td,
  .family-table th {
    display: block;
  }

  .family-table thead,
  .family-table tfoot {
    display: none;
  }

  .family-table tbody td {
    position: relative;
    padding-left: 40%;
    border: none;
    border-bottom: 1px solid #333;
  }

  .family-table tbody td::before {
    content: attr(data-label);
    position: absolute;
    top: 0;
    left: 0;
    padding: 10px;
    width: 40%;
    font-weight: bold;
  }
}