<style>
body {margin: 0; font-family: Roboto, -apple-system, 'Helvetica Neue', 'Segoe UI', Arial, sans-serif; background: #3b4465;}
.forms-section {display: flex; flex-direction: column; justify-content: center; align-items: center;}
.section-title {font-size: 32px; letter-spacing: 1px; color: #fff;}
.forms {display: flex; align-items: flex-start;	margin-top: 30px;}
.form-wrapper {animation: hideLayer .3s ease-out forwards;}
.form-wrapper.is-active {animation: showLayer .3s ease-in forwards;}

@keyframes showLayer {50% {z-index: 1;} 100% {z-index: 1;}}
@keyframes hideLayer {0% {z-index: 1;} 49.999% {z-index: 1;}}

.switcher {position: relative; cursor: pointer;
	display: block;
	margin-right: auto;
	margin-left: auto;
	padding: 0;
	text-transform: uppercase;
	font-family: inherit;
	font-size: 16px;
	letter-spacing: .5px;
	color: #999;
	background-color: transparent;
	border: none;
	outline: none;
	transform: translateX(0);
	transition: all .3s ease-out;
}

.form-wrapper.is-active .switcher-login {
	color: #fff;
	transform: translateX(90px);
}

.form-wrapper.is-active .switcher-signup {
	color: #fff;
	transform: translateX(-90px);
}

.underline {
	position: absolute;
	bottom: -5px;
	left: 0;
	overflow: hidden;
	pointer-events: none;
	width: 100%;
	height: 2px;
}

.underline::before {
	content: '';
	position: absolute;
	top: 0;
	left: inherit;
	display: block;
	width: inherit;
	height: inherit;
	background-color: currentColor;
	transition: transform .2s ease-out;
}

.switcher-login .underline::before {transform: translateX(101%);}
.switcher-signup .underline::before {transform: translateX(-101%);}
.form-wrapper.is-active .underline::before {transform: translateX(0);}

.form {
	overflow: hidden;
	min-width: 500px;
	margin-top: 50px;
	padding: 30px 25px;
  border-radius: 5px;
	transform-origin: top;
}

.form-login {animation: hideLogin .3s ease-out forwards;}

.form-wrapper.is-active .form-login {animation: showLogin .3s ease-in forwards;}

@keyframes showLogin {
	0% {
		background: #d7e7f1;
		transform: translate(40%, 10px);
	}
	50% {
		transform: translate(0, 0);
	}
	100% {
		background-color: #fff;
		transform: translate(35%, -20px);
	}
}

@keyframes hideLogin {
	0% {
		background-color: #fff;
		transform: translate(35%, -20px);
	}
	50% {
		transform: translate(0, 0);
	}
	100% {
		background: #d7e7f1;
		transform: translate(40%, 10px);
	}
}

.form-signup {
	animation: hideSignup .3s ease-out forwards;
}

.form-wrapper.is-active .form-signup {
	animation: showSignup .3s ease-in forwards;
}

@keyframes showSignup {
	0% {
		background: #d7e7f1;
		transform: translate(-40%, 10px) scaleY(.8);
	}
	50% {
		transform: translate(0, 0) scaleY(.8);
	}
	100% {
		background-color: #fff;
		transform: translate(-35%, -20px) scaleY(1);
	}
}

@keyframes hideSignup {
	0% {
		background-color: #fff;
		transform: translate(-35%, -20px) scaleY(1);
	}
	50% {
		transform: translate(0, 0) scaleY(.8);
	}
	100% {
		background: #d7e7f1;
		transform: translate(-40%, 10px) scaleY(.8);
	}
}

.form fieldset {
	position: relative;
	opacity: 0;
	margin: 0;
	padding: 0;
	border: 0;
	transition: all .3s ease-out;
}

.form-login fieldset {transform: translateX(-50%);}

.form-signup fieldset {transform: translateX(50%);}

.form-wrapper.is-active fieldset {
	opacity: 1;
	transform: translateX(0);
	transition: opacity .4s ease-in, transform .35s ease-in;
}

.form legend {
	position: absolute;
	overflow: hidden;
	width: 1px;
	height: 1px;
	clip: rect(0 0 0 0);
}

.input-block {margin-bottom: 20px;}
.input-block label {font-size: 14px; color: #a1b4b4;}

.input-block input {
	display: block;
	width: 100%;
	margin-top: 8px;
	padding-right: 15px;
	padding-left: 15px;
	font-size: 16px;
	line-height: 40px;
	color: #3b4465;
  background: #eef9fe;
  border: 1px solid #cddbef;
  border-radius: 2px;
}

.form [type='submit'] {
	opacity: 0;
	display: block;
	min-width: 120px;
	margin: 30px auto 10px;
	font-size: 18px;
	line-height: 40px;
	border-radius: 25px;
	border: none;
	transition: all .3s ease-out;
}

.form-wrapper.is-active .form [type='submit'] {
	opacity: 1;
	transform: translateX(0);
	transition: all .4s ease-in;
}

.btn-login {color: #fbfdff; background: #a7e245; transform: translateX(-30%);}
.btn-signup {color: #a7e245; background: #fbfdff; box-shadow: inset 0 0 0 2px #a7e245; transform: translateX(30%);}
</style>