.product .tab-content > #pcrs-product-parts {
    display: block !important;     
    height: 0 !important;         
    overflow-y: hidden !important; 
}

.product .tab-content > #pcrs-product-parts.active {
    height: auto !important;      
} 

.product .page-product-box .nav-tabs { 
    padding: 0px;
    margin: 0px;
    position: relative;
    border: none;
    background: #101C2E;
    text-align: center;
}
.product .page-product-box .nav-tabs li { 
    border-left:1px solid #2a405a;
    display:inline-block;
    float:none;
    margin-bottom:0;
}
.product .page-product-box .nav-tabs li:first-child {
    border-left:none;
}
.product .page-product-box .nav-tabs li a { 
    color: #FFF;
    text-transform: uppercase;
    font-family: "Roboto", sans-serif;
    font-weight: 600;
    font-size: 18px;
    line-height: 20px;
    padding: 15px;
    margin: 0;
    position: relative;
    border: none;
    background: #101C2E;
    display:block;
}
.product .page-product-box .nav-tabs li a:hover, 
.product .page-product-box .nav-tabs li.active a { 
    background: #d72a2a;;
}