BODY {
    font-family:Arial,sans-serif;
    font-size:16px;
    color:#1d2129;
    margin:20px auto;
    padding:20px;
    line-height:20px;
    width:100%;
    max-width:640px;
    text-align:justify;
    border: 10px solid #eda340;
    border-radius: 25px;
}

#header {
    width:100%;
    height:100%;
    height:auto;
    position:sticky;
    position:-webkit-sticky;
    top:0px;
    padding: 10px 0px;
    margin:0px auto 20px;
    background:#eda340;
    text-align: center;
}

@media screen and (max-width:640px){
    body{
        width:auto;
        max-width:100%;
        margin:0px;
        }
}