.foto1 {
  background-image: url("https://lh3.googleusercontent.com/pw/ACtC-3dRWE9fuMXaS26Fz6nznwag2yV2ExrJ5LK8F6jzS5O7PH8PB5mjKRR1sh73FQVcRoVIqNsW6Olm_6lzWH1BJYDG_tv9_P-Wg0XeuqEDuD2pPivkuK7OG_kwcMoByyK8A88IfnZSUclP3zvsXtKA7WI=w714-h169-no?authuser=0");  
}

.foto2 {
  background-color: yellow;
  }