:root {
    --primary: #5f0000;
    --secondary: #a51f1f;
    --text-primary: #fff;
}

.btn-success:hover, .btn-success:focus, .btn-success:active{
    background-color: var(--secondary);
    border: 1px solid var(--secondary);
}

.btn-yellow:hover, .btn-yellow:focus, .btn-yellow:active{
    background-color: var(--primary);
    border: 1px solid var(--primary);
}

.form-group .radio-button input:checked + label::after{
    background: #fff;
}

.form-group .check-box input:checked + label::after{
    border-color: #fff;
}

.scroll-to-top:hover{
    color: var(--text-primary);
}

.intro-section{
    background-image: linear-gradient(131deg,var(--primary),var(--secondary));
}

#exam-categories .value-body img {
    filter: invert(6%) sepia(97%) saturate(4948%) hue-rotate(13deg) brightness(90%) contrast(113%);
    -webkit-filter: invert(6%) sepia(97%) saturate(4948%) hue-rotate(13deg) brightness(90%) contrast(113%);
}

#exam-categories .button.mixitup-control-active img {
    filter: invert(100%) sepia(4%) saturate(7484%) hue-rotate(171deg) brightness(106%) contrast(107%);
    -webkit-filter: invert(100%) sepia(4%) saturate(7484%) hue-rotate(171deg) brightness(106%) contrast(107%);
}

#exam-item .category a img{
    filter: invert(100%) sepia(4%) saturate(7484%) hue-rotate(171deg) brightness(106%) contrast(107%);
    -webkit-filter: invert(100%) sepia(4%) saturate(7484%) hue-rotate(171deg) brightness(106%) contrast(107%);
}