Create a Login modal popup using HTML and CSS

LIVE DEMO

HTML Code

The HTML code that will be used to create the Login Modal Poup is below:

<!-- HTML -->
<div class="overlay">
	<div class="modal">
		<div class="tabs">
			<button class="active" data-tab="login">Login</button>
			<button data-tab="signup">Sign Up</button>
		</div>
		<div class="tab-content" data-tab="login">
			<button class="s_btn continue-btn">Connect using Github</button>
			<h2>Login with Email</h2>
			<form>
				<input type="email" placeholder="Email">
				<input type="password" placeholder="Password">
				<button class="s_btn login-btn">Login</button>
			</form>
		</div>
		<div class="tab-content" data-tab="signup">
			<h2>Sign Up</h2>
			<form>
				<input type="text" placeholder="Name">
				<input type="email" placeholder="Email">
				<input type="password" placeholder="Password">
				<button class="signup-btn">Sign Up</button>
			</form>
		</div>
	</div>
</div>

CSS Code

The CSS code that can be used to create the Login Modal Popup is:

/* CSS */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.modal {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.3);
  padding: 30px;
  max-width: 380px;
  width: 100%;
  box-sizing: border-box;
}

.tab-content[data-tab="signup"] {
    display: none;
}

.tabs {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  margin-top: -20px;
}

.tabs button {
  background-color: transparent;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  padding: 10px 20px;
  color: #333;
  border-radius: 0;
}

.tabs button.active {
  border-bottom: 2px solid #333;
}

.tab-content {
  display: block;
}

.tab-content.active {
  display: block;
}

.tab-content h2 {
  margin-top: 0;
}

form {
  margin-top: 20px;
}

input {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 4px;
  border: 1px solid #ccc;
  box-sizing: border-box;
}

button {
  display: block;
  width: 100%;
  background-color: #333;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 10px;
  cursor: pointer;
  margin-top: 20px;
}

.continue-btn {
  background-color: #3b5998;
}

.login-btn {
  background-color: #333;
}

.s_btn {
    padding: 15px 0
}

.tab-content h2 {
    margin-top: 20px;
}

Output