.dash {padding: 0.5em; border: 1px dashed #afafaf; background-color: #f2f2f2;}
.photo_r img,.photo_l img, .photo_p img{width: 100%; height: auto;}

@media print, screen and (min-width: 1000px){
.txt{text-indent:1em; margin-left: 1em; margin-right: 1em;}
.photo_r{float: right; width: 40%; margin-left: 0.4em; margin-right: 1em;}
.photo_l{float: left; width: 40%; margin-left: 1em; margin-right: 0.4em;}
.photo_p{float: right; width: 25%; margin-left: 0.2em;}
}

@media only screen and (max-width: 999px){
.photo_r, .photo_l, .photo_p{margin-top: 0.5em; margin-bottom: 0.5em;}
.txt{text-indent:1em;}
.txt:nth-child(n+1){margin-top: 1em;}
}