body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
header {
   
    background: #005cbf;
    color: white;
    padding: 1rem 0;
    text-align: center;
}
nav {
    background: #f4f4f4;
    padding: 1rem;
    text-align: center;
}
nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #333;
}
main {
    padding: 2rem;
}
footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 1rem 0;
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 3%;
}

header{
    padding: 10px;
    text-align: center;
}

.child {
    display: inline;
    width: 100px;
    height: 100px;
  
   
}

main{
    color: gray;
}