p {
    line-height: 1.5;
}
.element1 {
    width: 360px;
    height: 240px;
    float: left;
    margin-top: 20px;
    margin-left: 20px;
}
.element2 {
    width: 270px;
    height: 160px;
    float: right;
    margin-top: 20px;
    margin-left: 20px;
}

.element3 {
    float: right;
}