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Modal with Backdrop Blur

Create a modern modal dialog with blurred background overlay.

01

The problem

You need a modal dialog with a blurred backdrop that focuses user attention on the content.

02

The solution

CSS
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #16213e;
  border-radius: 16px;
  padding: 32px;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s ease;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: #888;
  font-size: 24px;
  cursor: pointer;
  transition: color 0.2s;
}

.modal-close:hover {
  color: #fff;
}

03

See it live

Isolated previewSandboxed
04

Put it to work

Example
<div class="modal-overlay" id="modal">
  <div class="modal-content">
    <button class="modal-close">&times;</button>
    <h2>Modal Title</h2>
    <p>Modal content goes here...</p>
    <button class="btn-primary">Confirm</button>
  </div>
</div>

Worth knowing

Add .active class with JavaScript to show the modal. Click overlay or close button to dismiss.