To put CSS files in HTML, use...
CSS Rulesets
Selector - p {
Property - color: red;
Declaration - }
Properties - With these, you can style a HTML element, like for example; color.
Property Value - This chooses one of the possible options for a given property, like red for color.
You can also write css like html{color:red;}
You can also put styles in HTML elements.
You can also select multiple elements at once like...
h1, h4, h6, h2 {
color: red;
}
Text Elements
font-size: 10px; - Size are in pixels
font-family: verdana; - Fonts
text-align: center; - Can align to the left side, right side, or in the center of the webpage.
text-shadow: 3px black - Shadow of text. Can be in pixels and colors.
font-size: 26px; - Text size, can be in pixels.
Padding Elements
padding-top: 50px; - Separation. Can be top, left, right, and the bottom in pixels.
margin: 50px; - A margin. Can be in pixels.
border-width: 5px; - Border width. Can be thin, medium, thick, or just pixels.
border-style: dotted; - Border style. Can be dotted, dashed, solid, double, groove, ridge, inset, outset, none, or hidden. Can also be colored.
width=500px; - Width of the element. Can be pixels or percentages.
Color Elements
color: red; - Color of the element, can be hexadecimal, or RGB.
background-color: white; - Background color of the element.
Extra: Centering Images
img {
margin: 0 auto;
display: block;
}