body{
    font-family: arial;
    font-size:18px;
    color:#333;
    margin: 0;
    padding:0;
}

header{
    height:130px;
    padding-top:40px;
    background:#f4f4f4;
    text-align: center;
    border-bottom: #333 3px solid;

}

h1#heading{
    margin: 0;
    padding: 0;
}

#container{
    width:960px;
    margin:20px auto;
    padding: 20px;
    overflow:auto;

}
Add styling to the html file
Add styling to the html file
