The hr html entity needs to be styled with both color and background-color attributes to display the desired color in all browsers. It is also adviced to define border 0 for the hr in the style sheet.

Example:

 
hr {
color: #c7c7c7;
background-color: #c7c7c7;
border: 0;
margin-bottom: 1em;
margin-top: 1em;
}

The current year is useful in applications such as copyright notices, typically used in footer of website. This is the simplest possible code for displaying current year:

<?php echo date('Y'); ?>

Sometimes, for reasons that elude me, you can not use a class or an id for an element placed within another element that already uses a class or an id. To get around this you must define the element you want to style in your style sheet as a sub element of the principal class or id.

For example, if you want to have an image within a div and you want both the div and the image to use style sheet defined properties, then your style sheet should look like this:

.div {
define properties for the div
}

.div img {
define properties for the image within the div
}

You could also use id instead of class and it would then look like:

#div {
define properties for the div
}

#div img {
define properties for the image within the div
}