* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }  
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
  }
body {
    display: flex;
    flex-direction: column;
    background-image: url(images/pic2.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    font-size: large;
}
h1 {
    padding: 16px;
    padding-bottom: 0;
}
#tempdet{
    font-size: larger;
    padding: 20px;
}
#database{
    font-size: larger;
    padding: 20px;
}
#dbms{
    display: block;
    margin: 20px auto;
    width: 500px;
    height: 300px;
}
#insta{
    font-size: 60px;
    color: black;
    padding-top: 20px;
    padding-left: 80px;
}
#git{
    padding-left: 80px;
    font-size: 60px;
    color: black;
    padding-top: 50px;
}
#mail{
    padding-left: 80px;
    font-size: 60px;
    color: black;
    padding-top: 50px;
}
#linkd{
    font-size: 60px;
    color: black;
    padding-left: 80px;
    padding-top: 50px;
}
#detector{
    display: block;
    margin: 20px auto;
    width: 500px;
    height: 300px;
}
#stcs{
    height: 250px;
    width: 350px;
    float: left;
    padding-right: 30px;
    padding-bottom: 30px;
}
#avv{
    padding-top: 30px;
    float: left;
    height: 250px;
    width: 350px;
    clear: left;
    padding-right: 30px;
}
#stccont{
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
#avvcont{
    clear: left;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
#star {
    display: block;
    margin: 0 auto;
    height: 375px;
    width: auto;
    padding-bottom: 50px;
}
#intro {
    font-family: 'Times New Roman', Times, serif;
    font-weight: bold;
    font-size: larger;
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.footer {
    text-align: center;
    padding: 14px 20px;
    color: white;
    background-image: url(images/pic3.jpg);
    background-size: cover;
    background-position: center;
    width: 100%;
}
.page-container {
    display: flex;
    flex: 1;
    flex-direction: row;
    flex-wrap: nowrap;
}
.wrapper {
    flex: 1;
    display: block;
    padding: 1rem;
    box-sizing: border-box;
}
.sidebar {
    width: 220px;
    background-color: darkslategrey;
    color: white;
    padding: 20px;
    box-sizing: border-box;
    height: 100vh;
    position: sticky;
    top: 0;
    flex-shrink: 0;
    max-width: 100%;
    overflow-x: hidden;
}
.sidebar nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}
.sidebar nav ul li {
    margin: 20px 0;
}
.sidebar nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}
.sidebar nav ul li a:hover {
    color: #ffcc00;
}
.main-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
@media (max-width: 768px) {
    .page-container {
      flex-direction: column;
    }
    .sidebar {
      width: 100%;
      height: auto;
      padding: 20px;
      box-sizing: border-box;
      background-color: darkslategrey;
      position: relative; 
      top: auto;
      z-index: 1;
    }
    .sidebar nav ul {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      padding: 0;
      margin: 0;
      width: 100%;
    }
    .sidebar nav ul li {
      margin: 10px 0;
      list-style: none;
    }
    .sidebar nav ul li a {
      display: block;
      padding: 10px;
      width: 100%;
      text-align: left;
      color: white;
      text-decoration: none;
      border-radius: 6px;
    }
    .sidebar nav ul li a:hover {
        color: #ffcc00;
    }
  }