Programming is still a new world for me, and I'm struggling to understand the purpose behind using multiple classes in HTML. While it seems like whether we use one class or several, the CSS styles will apply to the same content or text anyway. So why complicate things with multiple classes when just one could achieve the same results?
Utilizing multiple classes in your code helps maintain the DRY (Don't Repeat Yourself) principle. For example, imagine you have two buttons: a blue primary button and a red secondary button.
.red-button {
background-color: red;
border-radius: 3px;
color: #fff;
padding: 10px;
}
.blue-button {
background-color: blue;
border-radius: 3px;
color: #fff;
padding: 10px;
}
This leads to redundant CSS styling.
By utilizing multiple classes, you can simplify it like this:
.button {
border-radius: 3px;
color: #fff;
padding: 10px;
}
.button.red {
background-color: red;
}
.button.blue {
background-color: blue;
}
By utilizing classes, you have the flexibility to apply similar features in various elements without repeating the same code for each one. This helps in reducing duplication and making your styles more efficient.
In the realm of web development, a class serves as a marker for identifying an element as part of a certain group or category. An element can be associated with multiple groups simultaneously.
.team-member {
background: #afa;
margin: 5px;
padding: 5px;
width: 10em;
list-style: none;
}
.special-member {
background: #faa;
}<ul>
<li class="team-member">Alice Smith</li>
<li class="team-member">Bob Johnson</li>
<li class="team-member special-member">Eve Williams</li>
<li class="team-member special-member">Grace Parker</li>
<li class="team-member">Charlie Brown
</li>
</ul>It seems like you have a question about coding:
.x{
height:20px;
width:50px;}
.y{background:red;}<div class="x y"></div>You may be wondering why I used two separate classes, "x" and "y", instead of just combining them into one class and applying the styles to that single class.
Let's consider this scenario:
.header{font-size:50px;}
.blue{color:blue;
margin:10px;}<p class="header">Here is an example</p>
<p class="header blue">Goodbye!</p>
<p class="blue">I enjoy cooking</p>
<p class="blue">2+2=22!</p>In the above case, I wanted some text to be in blue color, while others were supposed to have a larger font size. The line saying "Goodbye!" required both styles. By using separate classes, I can avoid duplicating the CSS rules for every element that needs both properties.
The instance provided may not be very complex, but it demonstrates the necessity of utilizing multiple classes to reuse CSS code across various HTML elements without redundancy.
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