.header-heading {
    font-size: 2em;
    text-align: center;
    margin-top: 20px;
    color: rgb(33, 53, 53);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.content {
    background-color: #f0f0f0;
    padding: 20px;
    border-radius: 5px;
    margin: 20px auto;
    width: 80%;
}
.main-1 {
    font-size: 1.2em;
    color: #555;
    text-align: center;
    z-index: 0;
}
body{
    z-index: 1;
    
    background-size: cover;
}
.main-2 {
    font-size: 1.2em;
    color: #555;
    text-align: center;
    z-index: 0;
}