#s1ps { background-image: url(../img/7/1.jpg);} 
#s2ps { background-image: url(../img/7/2.jpg);} 
#s3ps { background-image: url(../img/7/3.jpg);} 
#s4ps { background-image: url(../img/7/4.jpg);} 
#s5ps { background-image: url(../img/7/5.jpg);} 
#s6ps { background-image: url(../img/7/6.jpg);} 
#s7ps { background-image: url(../img/7/7.jpg);} 
#s8ps { background-image: url(../img/7/8.jpg);} 
#s9ps { background-image: url(../img/7/9.jpg);} 
#s10ps { background-image: url(../img/7/10.jpg);} 
#s11ps { background-image: url(../img/7/11.jpg);} 
#s12ps { background-image: url(../img/7/12.jpg);} 
#s13ps { background-image: url(../img/7/13.jpg);}