copy and paste below CSS at Site Verification Tags or Visual Website Optimizer
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<style>
:root {
--logo: 80px;
}
@media (max-width:801px) {
.header {
height: var( --logo);
}
body,.navPages-container.is-open {
padding-top: var( --logo);
}
.skip-to-main-link {
top: 0px;
}
.header-logo {
height: var( --logo);
}
.header-logo-image-unknown-size,.header-logo-image {
max-height: calc(var(--logo) - 20px);
}
.navUser ul li.navUser-item--cart {
padding-top: 20px;
}
.mobileMenu-toggle {
top: 10px;
}
}
</style>