body.gt1920 .nav-left { left: 50%; margin-left: -960px; }
body.gt1080 .nav-left { height: 1080px;margin-top: -540px;top: 50%; }

body.gt1920 .main-block {width: 1920px;position: absolute;left: 50%;margin-left: -960px; }
body.steps-gym.gt1920 .main-block {width: 1670px;position: absolute;left: 50%;margin-left: -710px; }
body.gt1080 .main-block {height: 1080px;position: absolute; top: 50%; margin-top: -540px; }

body.gt1920 .bodybg, body.gt1080 .bodybg { background-image: url('/images/damask.jpg'); position: absolute; width: 100%; height: 100%; opacity: 0.1; }