Casecading Style Sheet (CSS)
1. CSS SelectorCSS
a. Selector <tag>
<!doctype html>
<html>
<head>
<title>CSS tag</title>
<style>
body {
background-color: lightblue;
}
h1 {
color: white;
text-align: center;
}
p {
font-family: verdana;
font-size: 20px;
}
</style>
</head>
<body>
<h1>My First CSS Example</h1>
<p>This is a paragraph.</p>
</body>
</html>
b. Selector .class
2. CSS ColorButton
<!doctype html>
<html>
<head>
<title>CSS 2</title>
<style>
.btn {
border: none;
color: white;
padding: 14px 28px;
font-size: 16px;
cursor: pointer;
}
.success {background-color: #4CAF50;} /* Green */
.success:hover {background-color: #46a049;}
.info {background-color: #2196F3;} /* Blue */
.info:hover {background: #0b7dda;}
.warning {background-color: #ff9800;} /* Orange */
.warning:hover {background: #e68a00;}
.danger {background-color: #f44336;} /* Red */
.danger:hover {background: #da190b;}
.default {background-color: #e7e7e7; color: black;} /* Gray */
.default:hover {background: #ddd;}
</style>
</head>
<body>
<h1>Alert Buttons</h1>
<button class="btn success">Success</button>
<button class="btn info">Info</button>
<button class="btn warning">Warning</button>
<button class="btn danger">Danger</button>
<button class="btn default">Default</button>
</body>
</html>
3. CSS FORMS
<!doctype html>
<html>
<title>CSS 3</title>
<style>
Input{type=text}, select {
width: 100%;
padding: 12px 20px;
margin: 8px 0;
display: inline-block;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
input[type=submit] {
width: 100%;
background-color: #4CAF50;
color: white;
padding: 14px 20px;
margin: 8px 0;
border: none;
border-radius: 4px
cursor: pointer;
}
input[type=submit]:hover {
background-color: #45a049;
}
div {
border-radius: 5px;
background-color: #f2f2f2;
padding: 20px;
}
</style>
<body>
<h3>Using CSS to style an HTML Form</h3>
<div>
<form action="/action_page.php">
<label for="fname">First Name</label>
<input type="text" id="fname" name="firstname" placeholder="Your name..">
<label for="1name">Last Name</label>
<input type="text" id="1name" name="lastname" placeholder="Your last name..">
<label for="country">Country</label>
<select id="country" name="country">
<option value="australia">Australia</option>
<option value="canada">Canada</option>
<option value="usa">USA</option>
</select>
<input type="submit" value="Submit">
</form>
</div>
</body>
</html>
4. CSS NAVIGATION BAR
<!DOCTYPE html>
<html>
<head>
<title>CSS 5</title>
</head>
<style>
body{ font-family:arial; }
ul {
list-style-type:
none;
margin:
0;
padding:
0;
overflow:
hidden;
background-color:
#333;
}
li {
float:
left;
}
li a{
display:
block;
color:
white;
text-align:
center;
padding:
14px 16px;
text-decoration:
none;
}
li a:hover:not(.active) {
background-color:
#111;
}
.active{
background-color:
#4CAF50;
}
</style>
<body>
<ul>
<li><a
href="#home">Home</a></li>
<li><a
href="#news">News</a></li>
<li><a
href="#contact">Contact</a></li>
<li
style="float: right;"><a class="active"
href="#about">About</a></li>
</ul>
</body>
</html>
5. CSS MENU DROPDOWN
<!DOCTYPE html>
<html>
<head>
<title>CSS 6</title>
<style>
body { font-family: arial; }
ul{
list-style-type:
none;
margin:
0;
padding:
0;
overflow:
hidden;
background-color:
#333;
}
li{
float:
left;
}
li a, .dropbtn {
display:
inline-block;
color:
white;
text-align:
center;
padding:
14px 16px;
text-decoration:
none;
}
li a:hover, .dropdown:hover .dropbtn {
background-color:
red;
}
li, dropdown {
display:
inline-block;
}
.dropdown-content{
display:
none;
position:
absolute;
background-color:
#f9f9f9;
min-width:
160px;
box-shadow:
0px 8px 16px 0px rgba(0,0,0,0.2);
z-index:
1;
}
.dropdown-content a{
color:
black;
padding:
12px 16px;
text-decoration:
none;
display:
block;
text-align:
left;
}
.dropdown-content a:hover {background-color: #f1f1f1}
.dropdown:hover .dropdown-content{
display:
block;
}
</style>
</head>
<body>
<ul>
<li><a
href="#home">Home</a></li>
<li><a
href="#news">News</a></li>
<li
class="dropdown">
<a
href="javascript:void(0)"
class="dropbtn">Dropdown</a>
<div
class="dropdown-content">
<a
href="#">Link 1</a>
<a
href="#">Link 2</a>
<a
href="#">Link 3</a>
</div>
</li>
</ul>
<h3>Dropdown Menu inside a Navigation
Bar</h3>
<p>Hover over the "Dropdown" link to
see the dropdown menu.</p>
</body>
</html>
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