.box {
    width: 350px;
    height: 220px;
    margin: 30px;
    padding: 15px 10px 20px;
    border: 2px dashed red;
    background: green;
}

.block {
    width: 600px;
    height: 400px;
    margin: 30px;
    text-align: justify;
}

.left_img {
    float: left;
    margin: 0 20px 10px 0;
}

.right_img {
    float: right;
    margin: 20px 0 20px 20px;
}