.event-category-year-wrap > h2 {
    margin-left: -50px;
    margin-bottom: 40px;
}
.event-category-year-wrap:before {
    top: 45px;
}
.event-category-year-wrap:after {
    top: 50px;
}
.event-category-year-wrap .event-category-wrap:last-child .event-category:last-child:after {
       bottom: -55px;
}