.who_image{
    float: right;
}
.who_list{
    width:70%;
}
.who_list li {
    clear:both;
    padding: 5px;
}
.volunteers_block {
    padding-bottom: 10px;
    text-align:center;
}
.volunteer_group {
    float: left;
    width: 30%;
    padding-right:10px;
}
#join {
    clear:both;
    padding-top: 10px;
}