:root{font-family:Rubik,Courier New,monospace;background-color:#04070d;color:#cbd5e1;direction:rtl;padding:5px 50px}body{font-family:Arial;padding:5px 50px;display:flex;justify-content:center;align-items:center;flex-direction:column}h1{font-size:50px}.login-button{border:1px solid #19f9d8;border-radius:8px;background:#0e1525;color:#19f9d8;font-weight:700;letter-spacing:1px;cursor:pointer;box-shadow:0 0 15px #19f9d833;font-size:35px;padding:15px 25px}.error-msg{color:red;font-size:25px;font-weight:700;font-family:sans-serif;opacity:0}.error-msg.show{opacity:100}