body {
    background-image:url('beach-volley-401878_1280.jpg') ;
    background-size: 1925px; 
    font-family: Arial, sans-serif;
    background-color: #3d3d3d00;
    margin: 0;
    padding: 0;
    color: #ffffff;
}
header {
    background-color: #3d3d3d00;
    color: rgb(255, 255, 255);
    padding: 10px 0;
    text-align: center;
}
nav {
    margin: 15px 0;
}
nav a {
    margin: 0 15px;
    text-decoration: none;
    color: rgb(255, 255, 255);
}
main{
 color:#ffffff;
}
section {
    padding: 20px;
    background-color: #3d3d3dcc;
    margin: 15px;
    border-radius: 8px;
}
footer {
    text-align: center;
    padding: 10px 0;
    background-color: #3d3d3dcc;
    color: rgb(255, 255, 255);
    position: relative;
    bottom: 0;
    width: 100%;
}