<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Simple Responsive CSS-Only Modal Demo</title>
<style>
*, *:before, *:after { box-sizing: border-box; }
body { height: 100vh;}
.modal-container {
margin: 0 auto;
padding-top: 60px;
position: relative;
width: 160px;
}
.modal-container button {
display: block;
margin: 0 auto;
color: #fff;
width: 160px;
height: 50px;
line-height: 50px;
background: #446CB3;
font-size: 22px;
border: 0;
border-radius: 3px;
box-shadow: 0 5px 5px -5px #333;
transition: background 0.3s ease-in;
}
.modal-container .modal-backdrop {
height: 0;
width: 0;
opacity: 0;
overflow: hidden;
transition: opacity 0.2s ease-in;
}
.modal-container #modal-toggle {
position: absolute;
left: 0;
top: 0;
height: 100%;
width: 100%;
margin: 0;
opacity: 0;
cursor: pointer;
}
.modal-container #modal-toggle:hover ~ button { background: #1E824C; }
.modal-container #modal-toggle:checked {
width: 100vw;
height: 100vh;
position: fixed;
left: 0;
top: 0;
z-index: 9;
opacity: 0;
}
.modal-container #modal-toggle:checked ~ .modal-backdrop {
background-color: rgba(0, 0, 0, 0.6);
width: 100vw;
height: 100vh;
position: fixed;
left: 0;
top: 0;
z-index: 9;
pointer-events: none;
opacity: 1;
}
.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content {
background-color: #fff;
max-width: 400px;
width: 100%;
height: 280px;
padding: 10px 30px;
position: absolute;
left: calc(50% - 200px);
top: 12%;
border-radius: 4px;
z-index: 999;
pointer-events: auto;
cursor: auto;
box-shadow: 0 3px 7px rgba(0, 0, 0, 0.6);
}
@media (max-width: 400px) {
.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content { left: 0; }
}
.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close {
color: #666;
position: absolute;
right: 2px;
top: 0;
padding-top: 7px;
background: #fff;
font-size: 16px;
width: 25px;
height: 28px;
font-weight: bold;
text-align: center;
cursor: pointer;
}
.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close.button {
top: initial;
bottom: 20px;
right: 20px;
background: #4CAF50;
color: #fff;
width: 50px;
border-radius: 2px;
font-size: 14px;
font-weight: normal;
}
.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close.button:hover {
color: #fff;
background: #1E824C;
}
.modal-container #modal-toggle:checked ~ .modal-backdrop .modal-content .modal-close:hover { color: #333; }
</style>
</head>
<body>
<div class="modal-container">
<input id="modal-toggle" type="checkbox">
<button>Click me</button>
<div class="modal-backdrop">
<div class="modal-content">
<label class="modal-close" for="modal-toggle">x</label>
<h2>Modal title</h2>
<hr />
<p>Simple Responsive CSS-Only Modal Demo</p>
<label class="modal-close button" for="modal-toggle">OK</label>
</div>
</div>
</div>
</body>
</html>