.prm-block {
    margin-left: auto;
    margin-right: auto;
    text-align: center
}

.prm-block-17, .prm-block-5 {
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    align-items: center;
    display: -ms-flexbox;
    display: flex;
    justify-content: center;
    background:#fff;
}

.prm-block-17 {
    height: 180px;
    width: 100%;
}

.prm-block-5 {
    min-height: 100px;
    min-width: 320px;
    width: 100%;
}

.header-pshadow {
    width: 100%;
}

@media screen and (max-width: 960px) {
    .prm-block-17 {
        height:calc(100vw / 5.3)!important;
    }

    .header-pshadow {
        height:calc(100vw / 5.3)!important;
        background-size: 100vw calc(100vw / 5.3)!important
    }
}