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29 July 2025

Sfondo animato CSS con effetto di caricamento

3 January 2025

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">
  <title>Andev Web</title>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
<link rel='stylesheet' href='https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap'><link rel="stylesheet" href="./style.css">

</head>
<body>

<div class="card" id="card-1">
			<input type="checkbox" class="open-card" id="open-card-1" checked />
			<label class="open-card-label" for="open-card-1"></label>
			<input type="checkbox" class="card-toggle" id="card-toggle-1" />
			<label class="card-toggle-label" for="card-toggle-1"></label>
			<div class="card-image"></div>
			<div class="card-header">
				<h2>Choose<br />your way</h2>
			</div>
			<div class="card-content left-content">
				<h3>Phasellus bibendum semper</h3>
				<p>Aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullam.</p>
				<p>Put aliquip ex ea commodo consequat. Neque porro quisquam est qui dolorem ipsum</p>
				<a class="card-button" href="#">Read more</a>
			</div>
			<div class="card-content right-content">
				<h3>Curabitur fermentum purus</h3>
				<p>Nulla facilisi morbi tempus iaculis urna id volutpat lacus laoreet non curabitur gravida arcu nec ante.</p>
				<p>Neque porro quisquam est qui dolorem ipsum quia dolor sit amet</p>
				<a class="card-button" href="#">Read more</a>
			</div>
			<div class="card-footer">
				<a href="#">Discover more</a>
			</div>
		</div>
		<div class="card" id="card-2">
			<input type="checkbox" class="open-card" id="open-card-2" checked />
			<label class="open-card-label" for="open-card-2"></label>
			<input type="checkbox" class="card-toggle" id="card-toggle-2" />
			<label class="card-toggle-label" for="card-toggle-2"></label>
			<div class="card-image"></div>
			<div class="card-header">
				<h2>Choose<br />your way</h2>
			</div>
			<div class="card-content left-content">
				<h3>Phasellus bibendum semper</h3>
				<p>Aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullam.</p>
				<p>Put aliquip ex ea commodo consequat. Neque porro quisquam est qui dolorem ipsum</p>
				<a class="card-button" href="#">Read more</a>
			</div>
			<div class="card-content right-content">
				<h3>Curabitur fermentum purus</h3>
				<p>Nulla facilisi morbi tempus iaculis urna id volutpat lacus laoreet non curabitur gravida arcu nec ante.</p>
				<p>Neque porro quisquam est qui dolorem ipsum quia dolor sit amet</p>
				<a class="card-button" href="#">Read more</a>
			</div>
			<div class="card-footer">
				<a href="#">Discover more</a>
			</div>
		</div>
		<div class="card" id="card-3">
			<input type="checkbox" class="open-card" id="open-card-3" checked />
			<label class="open-card-label" for="open-card-3"></label>
			<input type="checkbox" class="card-toggle" id="card-toggle-3" />
			<label class="card-toggle-label" for="card-toggle-3"></label>
			<div class="card-image"></div>
			<div class="card-header">
				<h2>Choose<br />your way</h2>
			</div>
			<div class="card-content left-content">
				<h3>Phasellus bibendum semper</h3>
				<p>Aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullam.</p>
				<p>Put aliquip ex ea commodo consequat. Neque porro quisquam est qui dolorem ipsum</p>
				<a class="card-button" href="#">Read more</a>
			</div>
			<div class="card-content right-content">
				<h3>Curabitur fermentum purus</h3>
				<p>Nulla facilisi morbi tempus iaculis urna id volutpat lacus laoreet non curabitur gravida arcu nec ante.</p>
				<p>Neque porro quisquam est qui dolorem ipsum quia dolor sit amet</p>
				<a class="card-button" href="#">Read more</a>
			</div>
			<div class="card-footer">
				<a href="#">Discover more</a>
			</div>
		</div>

  
</body>
</html>

CSS

html {
	box-sizing: border-box;
	font-family: "Montserrat", sans-serif;
	font-optical-sizing: auto;
	font-weight: 400;
	font-style: normal;
}
*,
::before,
::after {
	margin: 0;
	padding: 0;
	box-sizing: inherit;
	font-weight: inherit;
	font-family: inherit;
}
body {
	height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 20px;
	color: #f0f0f0;
	/*background-image: linear-gradient(43deg, #222e68 0%, #021d42 100%);*/
	background: #101522;
	background-blend-mode: hard-light;
	background-image: radial-gradient(circle at 20% 20%, #ffcc7066 10%, #ffcc7000 50%), radial-gradient(circle at 80% 80%, #0033ff66 10%, #0033ff00 50%),
		radial-gradient(ellipse at 35% 70%, #00ff4866 10%, #00ff4800 50%), radial-gradient(ellipse at 70% 35%, #ff005d66 10%, #ff005d00 60%);
	background-size: 250% 250%;
	animation: background-animation 30s infinite;
}
@keyframes background-animation {
	0% {
		background-position: 5% 0%;
	}
	25% {
		background-position: 20% 80%;
	}
	50% {
		background-position: 96% 100%;
	}
	75% {
		background-position: 80% 10%;
	}
	100% {
		background-position: 5% 0%;
	}
}
body::after {
	content: "";
	width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	left: 0;
	backdrop-filter: blur(4px);
	background: radial-gradient(ellipse, #00000000, #000000cc);
	z-index: -1;
}
.card {
	position: relative;
	width: 300px;
	height: 600px;
	outline: 2px solid #ffffff66;
	border-radius: 8px;
	overflow: hidden;
	background-color: #000000;
}

/*checkbox*/
input[type="checkbox"] {
	display: none;
}

/*label left-side*/
label.card-toggle-label {
	display: block;
	position: absolute;
	z-index: 99;
	width: 60px;
	height: 60px;
	top: 50%;
	left: 83%;
	transform: translate(-50%, -50%);
	border-radius: 50%;
	border: 1px solid #ffffff66;
	background: #00000033;
	backdrop-filter: blur(4px);
	cursor: pointer;
	transition: all 0.25s ease-in-out;
}
label.card-toggle-label::after,
label.card-toggle-label::before {
	content: "";
	display: block;
	position: absolute;
	top: 50%;
	left: 50%;
	width: 30px;
	height: 6px;
	transform: translate(-40%, calc(-50% - 8px)) rotate(40deg);
	border-radius: 3px;
	background-color: #f0f0f099;
	transition: all 0.5s ease-in-out;
}
label.card-toggle-label::after {
	transform: translate(-40%, calc(-50% + 8px)) rotate(-40deg);
}
label.card-toggle-label:hover {
	left: 85%;
}
label.card-toggle-label:hover::after,
label.card-toggle-label:hover::before {
	transform: translate(-40%, calc(-50% - 5px)) rotate(23deg);
	background-color: #f0f0f0ff;
}
label.card-toggle-label:hover::after {
	transform: translate(-40%, calc(-50% + 5px)) rotate(-23deg);
}

/*label right-side*/
.card-toggle:checked ~ label.card-toggle-label {
	left: 17%;
}
.card-toggle:checked ~ label.card-toggle-label:hover {
	left: 15%;
}
.card-toggle:checked ~ label.card-toggle-label::before {
	transform: translate(-60%, calc(-50% - 8px)) rotate(-40deg);
}
.card-toggle:checked ~ label.card-toggle-label::after {
	transform: translate(-60%, calc(-50% + 8px)) rotate(40deg);
}
.card-toggle:checked ~ label.card-toggle-label:hover::before {
	transform: translate(-60%, calc(-50% - 5px)) rotate(-23deg);
}
.card-toggle:checked ~ label.card-toggle-label:hover::after {
	transform: translate(-60%, calc(-50% + 5px)) rotate(23deg);
}

/*background left-side*/
.card-image {
	width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	left: 0;
	z-index: 0;
	background-size: cover;
	background-position: 0% 50%;
	transition: all 0.5s ease;
	opacity: 0.5;
}
#card-1 .card-image {
	background-image: url(https://github.com/VicioBonura/pubimgs/blob/main/motociclista-1.jpg?raw=true);
}
#card-2 .card-image {
	background-image: url(https://github.com/VicioBonura/pubimgs/blob/main/motociclista-3.jpg?raw=true);
}
#card-3 .card-image {
	background-image: url(https://github.com/VicioBonura/pubimgs/blob/main/motociclista-2.jpg?raw=true);
}
.card:hover .card-image {
	opacity: 1;
}
label.card-toggle-label:hover + .card-image {
	transition: all 2.5s ease;
	background-position: 10% 50%;
}

/*background right-side*/
.card-toggle:checked ~ .card-image {
	background-position: 100% 50%;
}
.card-toggle:checked ~ label.card-toggle-label:hover + .card-image {
	transition: all 2.5s ease;
	background-position: 90% 50%;
}

/*card header*/
.card-header {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 100px;
	background: #00000099;
	border-bottom: 1px solid #ffffff66;
	display: flex;
	justify-content: center;
	align-items: center;
	backdrop-filter: blur(4px);
	opacity: 1;
	transition: all 0.5s ease-in-out;
}
.card-header h2 {
	color: #f0f0f0f0;
	font-weight: 700;
	line-height: 0.8em;
	font-size: 2em;
	text-align: center;
}

/*card content*/
.card-content {
	position: absolute;
	width: 300px;
	height: 400px;
	top: 100px;
	padding: 1em;
	transition: all 0.25s ease-in-out;
}

.card-content a {
	display: inline-block;
	padding: 5px 10px;
	text-transform: uppercase;
	color: #f0f0f0;
	font-weight: 300;
	text-decoration: none;
	background: #00000033;
	backdrop-filter: blur(4px);
	border-radius: 6px;
	border: 1px solid #ffffff33;
	background-color: #00000066;
	margin: 30px 10px;
	transition: all 0.25s;
}
.card-content a:hover {
	border: 1px solid #ffffffcc;
	background-color: #ffcc7033;
}
.card-content h3 {
	font-size: 1.5em;
	font-weight: 700;
	line-height: 1.15em;
	margin-bottom: 1.15em;
}
.card-content p {
	margin-bottom: 1.15em;
}
.card-content.left-content h3,
.card-content.left-content p {
	margin-right: 30%;
}
.card-content.right-content h3,
.card-content.right-content p {
	margin-left: 30%;
}
/*card-content left-side*/
.card-content.left-content {
	opacity: 1;
	left: 0;
	background-image: linear-gradient(to right, #000000aa, #00000000);
	transition-delay: 0.25s;
}
.card-content.right-content {
	opacity: 0;
	text-align: right;
	left: 300px;
	background-image: linear-gradient(to left, #000000aa, #00000000);
	transition-delay: 0s;
}

/*card content right-side*/
.card-toggle:checked ~ .card-content.left-content {
	opacity: 0;
	left: -300px;
	transition-delay: 0s;
}

.card-toggle:checked ~ .card-content.right-content {
	opacity: 1;
	left: 0px;
	transition-delay: 0.25s;
}

/*card footer*/
.card-footer {
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	height: 100px;
	background: #00000099;
	backdrop-filter: blur(4px);
	border-top: 1px solid #ffffff66;
	display: flex;
	justify-content: center;
	align-items: center;
	opacity: 1;
	transition: all 0.5s ease-in-out;
}
.card-footer a {
	display: block;
	padding: 10px 20px;
	text-transform: uppercase;
	color: #ffffff;
	border: 1px solid #ffffff33;
	background-color: #ffcc7099;
	text-decoration: none;
	border-radius: 8px;
	transition: all 0.25s ease-in-out;
}
.card-footer a:hover {
	border: 1px solid #ffffffcc;
	background-color: #ffcc7033;
}

/*-------------------------*/
/*    open card section    */
/*-------------------------*/

/*label open card*/
label.open-card-label {
	display: block;
	position: absolute;
	top: 10px;
	right: 10px;
	transform: translate(-50%, -50%);
	z-index: 999;
}
input.open-card:checked + label.open-card-label {
	top: 50%;
	right: 50%;
	transform: translate(-50%, -50%);
}
label.open-card-label::before {
	content: "X";
	display: block;
	position: absolute;
	width: 30px;
	height: 30px;
	text-align: center;
	line-height: 30px;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	z-index: 1002;
	border-radius: 50%;
	border: 1px solid #ffffff33;
	background: #00000066;
	backdrop-filter: blur(4px);
	transition: all 0.25s ease-in-out;
	cursor: pointer;
	border-top-left-radius: 0%;
	border-bottom-right-radius: 0%;
}

label.open-card-label::after {
	content: "";
	display: block;
	position: absolute;
	width: 0px;
	height: 0px;
	background: #00000066;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	z-index: 1001;
	border-radius: 50%;
	backdrop-filter: blur(4px);
	transition: all 0.5s ease-in-out;
	pointer-events: none;
}

label.open-card-label:hover::after {
	width: 1250px;
	height: 1250px;
}

input.open-card:checked + label.open-card-label::before {
	content: "OPEN";
	width: 90px;
	height: 90px;
	text-align: center;
	line-height: 90px;
	overflow: hidden;
	transition-delay: 0;
	border-top-left-radius: 50%;
	border-bottom-right-radius: 50%;
}
input.open-card:checked ~ label.open-card-label:hover::before {
	width: 100px;
	height: 100px;
	line-height: 100px;
}
input.open-card:checked ~ label.open-card-label::after {
	background: #00000000;
}

input.open-card:checked ~ label.card-toggle-label {
	opacity: 0;
	left: 120%;
}

/*background open-card*/
input.open-card:checked ~ .card-image {
	background-position: 50% 50%;
	opacity: 1;
}

/*card-header open-card*/
input.open-card:checked ~ .card-header {
	opacity: 0;
	top: -100px;
}

/*card-content open-card*/
input.open-card:checked ~ .card-content {
	opacity: 0;
}
input.open-card:checked ~ .card-content.left-content {
	left: -300px;
	transition-delay: 0s;
}
input.open-card:checked ~ .card-content.right-content {
	left: 300px;
	transition-delay: 0s;
}

/*card-footer open-card*/
input.open-card:checked ~ .card-footer {
	opacity: 0;
	bottom: -100px;
}

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