#container {
position: relative;
background: red;
border: 3px solid blue;
overflow: auto;


}

#container>* {
width: 49%;

border: 2px solid black;
margin: 0;
}

#container h1 {
float: left;
background: yellow;
}


#container p {
text-align: left;
float: right;
background: green;
}