*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family: Arial, sans-serif;
    background:#f5f5f5;
    color:#222;
    line-height:1.6;
}

header{
    background:#000000;
    color:white;
    text-align:center;
    padding:20px;
}
details {
  margin: 10px 0;
}

summary {
  cursor: pointer;
  font-weight: bold;
}

.expanded-content {
  padding: 10px 20px;
}


nav{
    background:#000;
}

h1{
    font-family: cursive;
    margin-bottom:15px;
}




main{
    max-width:1000px;
    margin:auto;
    padding:20px;
}

h2{
    font-family: cursive;
    margin-bottom:15px;
}

img{
    max-width:100%;
}

footer{
    background:#000000;
    color:white;
    text-align:center;
    padding:15px;
    margin-top:30px;
}  

#topButton {
    position: fixed;
    bottom: 20px;
    right: 20px;

    padding: 10px 15px;
    cursor: pointer;
}
@media (max-width: 768px) {

    .tech-container {
        flex-direction: column;
    }

}