img {
    width: 300px;
    float: left;
    clear: both;
}

h1 {
    width: 200px;
    height: 30px;
    background: #8a8;
    float: left;
    clear: both;
    font-size: 1em;
    margin: 0;
}

main {
    width: 500px; 
    background: #eee; 
    height: 400px; 
    border: 1px solid red; 
    overflow: scroll;  
}