.classroom-nav-button{--classroom-nav-button-inset-block-start:max(var(--size-2), env(safe-area-inset-top,0px) + var(--size-1));--classroom-nav-button-inset-inline-start:var(--size-2);--classroom-nav-button-size:var(--size-6);z-index:calc(var(--z-90) + 1);width:fit-content;padding-block-start:var(--classroom-nav-button-inset-block-start);padding-inline-start:var(--classroom-nav-button-inset-inline-start);position:sticky;inset-block-start:0}.classroom-nav-button .button{--button-height:var(--classroom-nav-button-size);--button-color:var(--color-surface-00);--button-text-color:var(--color-text-primary);--icon-size:var(--size-2-5);box-shadow:var(--shadow-md)}