SSteven

In programming languages (such as Javascript, C++, etc.), indentation of code is a best practice. In markup languages such as HTML, is code indentation a best practice?

I request an evaluation of the following web page, especially on the use of semantic elements: https://jsfiddle.net/SSteven/qt9d2sfw/ Specifically: 1) At the top, 2 images are supposed to be displayed. (Currently, their alt text is displayed.) I have treated this as the <header>. I have used "float: left" to display both images horizontally. Is the code for the header element and its sub-elements OK? 2) The top menu has been displayed in an <nav> element, which has been styled along with its sub-elements. 3) The "side menu" has been included in an <aside> element. 4) The <main> element contains an <article> element, which has the main content. Both the "side menu" and the <main> element are floated horizontally. 5) Finally, there is a <footer> element. Basically, I'd like to ask: 1) Is the use of the semantic elements correct? 2) Is their styling done correctly or is there a better way? I'd also like to ask about indentation guidelines for HTML code. I have indented the HTML code. What is the normal practice? Thanks.