.pb1 {
    background: url(/assets/img/sponsors/withsecure.png) no-repeat center center;
}
.pb2 {
    background: url(/assets/img/sponsors/synopsys.svg) no-repeat center center;
}
.pb3 {
    background: url(/assets/img/sponsors/quorumcyber.png) no-repeat center center;
}
.pb4 {
    background: url(/assets/img/sponsors/adarma-twgt.png) no-repeat center center;
}
.pb5 {
    background: url(/assets/img/sponsors/13fields.png) no-repeat center center;
}
.pb6 {
    background: url(/assets/img/sponsors/interrupt.svg) no-repeat center center;
}
.pb7 {
    background: url(/assets/img/sponsors/nable.png) no-repeat center center;
}
.pb8 {
    background: url(/assets/img/sponsors/ncr.png) no-repeat center center;
}
.pb9 {
    background: url(/assets/img/sponsors/clamxav.png) no-repeat center center;
}
.pb10 {
    background: url(/assets/img/sponsors/systal.png) no-repeat center center;
}
.pb11 {
    background: url(/assets/img/sponsors/northgreen.png) no-repeat center center;
}
.pb12 {
    background: url(/assets/img/sponsors/sbrc.svg) no-repeat center center;
}
.pb13 {
    background: url(/assets/img/sponsors/hyper9.svg) no-repeat center center;
}
.pb14 {
    background: url(/assets/img/sponsors/ns.png) no-repeat center center;
}