CSS not loading right, but I give F5 and loads normally - Angular 5 with Material

Hello,

I am creating a system with Angular 5 along with the Material (CSS), but I have the following problem in my project: When logo on the system, CSS is badly loaded (image below).

ButwhenIgiveF5,thescreencorrectsaccordingtomyCSS:

I have no idea where this problem starts, does anyone have an idea?