*.unselectable {-moz-user-select: none;-khtml-user-select: none;-webkit-user-select: none;
/*Introduced in Internet Explorer 10.See http://ie.microsoft.com/testdrive/HTML5/msUserSelect/*/-ms-user-select: none;user-select: none;}
p {-webkit-user-select: none; /* Chrome all and Safari all */-moz-user-select: none; /* Firefox all */-ms-user-select: none; /* Internet Explorer 10 and later */user-select: none; /* Likely future */}
nav li {display: inline-block;position: relative;}
nav li a {display: inline-block;padding: 10px 20px;}
nav li a:hover {color: red;}
nav li.disabled:before {content: '';position: absolute;top: 0;left: 0;bottom: 0;right: 0;}
#example::before // You can of course use **::after** as well.{content: 'Hello, World!'; // Both single-quotes and double-quotes can be used here.
display: block; // To make sure it works fine in every browser.}