HTML&CSS

Self-Closing Elements:

<br>, <embed>, <hr>, <img>, <input>, <link>, <meta>, <param>, <source>, <wbr>

CSS selectors: type, class, and ID

1. Type Selectors: target all division elements <div>

CSS:

div{...}

HTML:

<div>...</div>
<div>...</div>

2. Class Selector: select a particular group of elements rather than all elements of one type

CSS:

.awesome{...}

HTML:

<div class="awesome">...</div>
<p class="awesome">...</p>

3. ID Selector: target only one unique element at a time

CSS:

#name{...}

HTML:

<div id="name">...</div>

<div> and <span> exist for styling only.

<div>is used to identify large grouping of content

<span>used to identify smaller groupings of text within a block-level element.