.css files.selector {
property: value;
property: value;
property: value;
}
/* This is a comment */
*,
*::after,
*::before {
box-sizing: border-box;
}
p {
text-align: center;
color: red;
}
.paragraph {
text-align: center;
color: red;
font-size: 1.2rem;
font-family: "Courier New", Courier, monospace;
font-weight: bold;
}
p.paragraph {
text-align: center;
color: red;
}
#paragraph {
text-align: center;
}
/* Descendant selector: Select all <p> inside section */
section p {
color: #21211f;
}
/* Child selector: Select all <p> which are direct children inside section */
section > p {
color: #21211f;
}
/* Adjacent Sibling selector: Select <p> that come immediately after <div> */
div + p {
color: #21211f;
}
/* General Sibling selector: Select all <p> siblings of <div> */
div ~ p {
color: #21211f;
}
/* A pseudo-class defines a special state of an element. */
/* Visited link */
a:visited {
color: #00ff00;
}
/* Mouse over link */
a:hover {
color: #ff00ff;
}
/* Active link */
a:active {
color: #0000ff;
}
/* Select the first <p> which is the first child of another element */
section p:first-child {
color: blue;
}
/* Select the first <p> which is the first child of another element */
section p:nth-child(1) {
color: blue;
}
/* Style specific parts of an element. */
h1::before {
content: url(./smiley.gif);
}
h1::after {
content: url(./smiley.gif);
}
a[target="_blank"] {
background-color: yellow;
}
/* Select any class "hide" or "hide-" */
[class|="hide"] {
background: yellow;
}
/* Select any class starting with "hid" */
[class^="hid"] {
background: yellow;
}
/* Select any class ending with "den" */
[class$="den"] {
background: yellow;
}
/* Select any class containing "te" */
[class*="te"] {
background: yellow;
}
input[type="text"] {
width: 150px;
display: block;
margin-bottom: 10px;
background-color: yellow;
}
section > h2 {
color: #21211f;
/*
color: hsl(60, 3%, 13%);
color: rgb(34, 34, 32);
An HSL color value is specified with: hsl(hue, saturation, lightness).
Hue is a degree on the color wheel (from 0 to 360):
0 (or 360) is red
120 is green
240 is blue
Saturation is a percentage value: 100% is the full color.
Lightness is also a percentage; 0% is dark (black) and 100% is white.
*/
}
div {
background-color: #fff;
background-image: url(../assets/html-css.png);
background-repeat: no-repeat;
background-position: top;
}
p {
border: 2px red dashed;
}
p {
margin: 2px 3px 4px 5px;
/*
margin: 10px 20px;
*/
}
<!DOCTYPE html>
<html>
<head>
<script
src="https://kit.fontawesome.com/a076d05399.js"
crossorigin="anonymous"
></script>
</head>
<body>
<div>
<i class="fas fa-car"></i>
</div>
</body>
</html>
/* Unvisited link */
a:link {
color: red;
}
/* Visited link */
a:visited {
color: green;
}
/* Mouse over link */
a:hover {
color: hotpink;
}
/* Selected link */
a:active {
color: blue;
}
ul {
list-style: none;
}
h1 {
display: none;
}
h2 {
visibility: hidden;
}
div {
width: 20%;
/*
width: 500px;
max-width: 700px;
*/
}
/* Default value is static */
div {
position: relative;
}
div span {
position: absolute;
top: 30px;
left: 50px;
}
/*
static: Static positioned elements are not affected by the top, bottom, left, and right properties.
fixed: Positioned relative to the viewport, always stays in the same place even if the page is scrolled.
relative: Positioned relative to its normal position. Adjusted with top, right, bottom, and left properties.
absolute: Positioned relative to the nearest positioned ancestor. Uses the document body if no positioned ancestors are found.
sticky: Positioned based on the user's scroll position.
*/
/* z-index controls the stacking order of elements */
img {
position: absolute;
left: 0px;
top: 0px;
z-index: -1;
}
/* overflow controls content that is too big to fit into an area. */
div {
width: 200px;
height: 65px;
background-color: coral;
overflow: visible;
/*
overflow: hidden;
overflow: scroll;
overflow: auto; /* Add scroll only when necessary */
*/
}
img {
float: right;
/*
float: left;
float: none;
*/
}
/*
inline: Can't set height and width; top and bottom margin and padding are not respected.
inline-block: Can set height, width; top and bottom margin and padding are respected.
block: Adds a line break after the element.
*/
span {
display: inline-block;
/*
display: block;
display: inline;
*/
}
/*
Absolute units:
cm
mm
in (1in = 2.54cm)
px
pt
Relative units:
em: 2em means 2 times the size of the current font.
rem: Relative to the font-size of the root element.
vw: Relative to 1% of the width of the viewport.
vh: Relative to 1% of the height of the viewport.
%: Relative to the parent element.
*/
h1 {
font-size: 60px;
}
/*
1. Inline styles: Example: <h1 style="color: pink;">
2. IDs: Example: #navbar
3. Classes, pseudo-classes, attribute selectors: Example: .test, :hover, [href]
4. Elements and pseudo-elements: Example: h1, ::before
5. Universal selector *
*/
/*
!important rule overrides all previous styling rules for that specific property on that element.
*/
#my-id {
background-color: blue;
}
.my-class {
background-color: gray;
}
p {
background-color: red !important;
}