.main-nav:after {clear: both;content: "\00a0";display: block;height: 0;font: 0px/0 serif;overflow: hidden;}.nav-brand {float: left;margin: 0;}.nav-brand a {display: block;padding: 11px 11px 11px 0px;color: rgb(255, 255, 255);font-size: 22px;font-weight: normal;line-height: 17px;text-decoration: none;}#main-menu {clear: both;border-bottom: 0;}@media (min-width: 768px) {#main-menu {clear: none;}}.main-menu-btn {float: right;margin: 5px 10px;position: relative;display: inline-block;width: 29px;height: 29px;text-indent: 29px;white-space: nowrap;overflow: hidden;cursor: pointer;-webkit-tap-highlight-color: rgba(0, 0, 0, 0);}.main-menu-btn-icon, .main-menu-btn-icon:before, .main-menu-btn-icon:after {position: absolute;top: 50%;left: 2px;height: 2px;width: 24px;background: rgb(255, 255, 255);-webkit-transition: all 0.25s;transition: all 0.25s;}.main-menu-btn-icon:before {content: '';top: -7px;left: 0;}.main-menu-btn-icon:after {content: '';top: 7px;left: 0;}#main-menu-state:checked ~ .main-menu-btn .main-menu-btn-icon {height: 0;background: transparent;}#main-menu-state:checked ~ .main-menu-btn .main-menu-btn-icon:before {top: 0;-webkit-transform: rotate(-45deg);transform: rotate(-45deg);}#main-menu-state:checked ~ .main-menu-btn .main-menu-btn-icon:after {top: 0;-webkit-transform: rotate(45deg);transform: rotate(45deg);}#main-menu-state {position: absolute;width: 1px;height: 1px;margin: -1px;border: 0;padding: 0;overflow: hidden;clip: rect(1px, 1px, 1px, 1px);}#main-menu-state:not(:checked) ~ #main-menu {display: none;}#main-menu-state:checked ~ #main-menu {display: block;}@media only screen and (min-width: 768px) and (max-width: 991px){}@media (min-width: 768px) {.main-menu-btn {position: absolute;top: -99999px;}#main-menu-state:not(:checked) ~ #main-menu {display: block;}}body {background: #fff;}.demo-text {margin: 3em 22px;}.demo-text p {margin-bottom: 1em;}.demo-text a {color: #999;}