.main-layout{display:flex;justify-content:center}.ad-section{background-color:#f0f0f0;box-sizing:border-box;display:none;height:100vh;padding:20px;position:sticky;top:0;width:600px}.main-section{display:flex;flex:1;flex-direction:column;max-width:500px;min-height:100dvh;width:100%}.header-section{padding:0;position:sticky;text-align:center;top:0;z-index:11}.content-section{background-color:#fff;box-sizing:border-box;flex:1}.footer-section{bottom:0;padding:0;position:sticky;text-align:center;z-index:11}@media (min-width:1100px){.ad-section{display:none}.main-layout{justify-content:center}}