.section-inner.thin.error404-content form.search-form {
    display: none;
}

.footer-nav-widgets-wrapper.header-footer-group {
    display: none;
}

.section-inner.thin.error404-content .intro-text p {
    font-size: 1rem;
    font-weight: 500;
}
.error404 #site-content{
    margin-top: 50px !important;
    margin-bottom: 100px !important;
}
@media(max-width:767px){
    .error404 #site-content{
        margin-top: 50px !important;
        margin-bottom: 50px !important;
    }
}