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HTML 

              
                <!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="css/signup-page.css">
    <script src="https://kit.fontawesome.com/20d81f7ef4.js" crossorigin="anonymous"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.1/jquery.min.js"></script>
    <script src="javascript/signup-page.js"></script>
    <title>SignUp page</title>
</head>

<body>
    <div class="container" id="container">
        <div class="left">
            <div id="left-div">
                    <form action="">
                    <h1>Sign In</h1>
                    <div class="icon">
                        <a href="#"><i class="fab fa-instagram"></i></a>
                        <a href="#"><i class="fab fa-google"></i></a>
                        <a href="#"><i class="fab fa-linkedin"></i></a>
                    </div>
                    <div class="p">or use your account</div>
                    <div class="email">
                        <input type="email" name="" id="txtEmail" placeholder="Email" required>
                    </div>
                    <div class="pswd">
                        <input type="password" name="" class="pswd" id="pswd" placeholder="Password" required>
                        <a href="">
                            <i class="fa fa-eye" aria-hidden="true"></i>
                        </a>
                    </div>
                    <div class="forgot">
                        <a href="#">Forgot your password?</a>
                    </div>
                    <div class="btn">
                        <button id="Signin">SIGN IN</button>
                    </div>
                </form>
            </div>

            <div id="left-hide">
                <form action="">
                    <h1>Create Account</h1>
                    <div class="icon">
                        <a href="#"><i class="fab fa-instagram"></i></a>
                        <a href="#"><i class="fab fa-google"></i></a>
                        <a href="#"><i class="fab fa-linkedin"></i></a>
                    </div>
                    <div class="p">or use your email for registration</div>
                    <div class="name">
                        <input type="text" name="" id="txtName" placeholder="Name" required>
                    </div>
                    <div class="email">
                        <input type="email" name="" id="txtEmail1" placeholder="Email" required>
                    </div>
                    <div class="pswd">
                        <input type="password" name="" class="pswd" id="pswd1" placeholder="Password" required>
                        <a href="">
                            <i class="fa fa-eye" aria-hidden="true"></i>
                        </a>
                    </div>
                    <div class="btn">
                        <button id="Signin">SIGN UP</button>
                    </div>
                </form>
            </div>
        </div>
            

        <!-- Right part -->
        <div class="right">
            <div class="right1 " id="right-div">
                <h1>Hello, Friend!</h1>
                <p>Enter your personal details and start journey with us.</p>
                <button id="signUp">SIGN UP</button>
            </div>
            <div class="right2" id="right-hide">
                <h1>Welcome Back!</h1>
                <p>To keep connected with us please login with your personal info</p>
                <button id="signIn">SIGN IN</button>
            </div>
        </div>
    </div>

</body>
</html>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Montserrat:400,800');

/* .valid{
    border: 1px solid green;
}
.not-valid{
    border: 1px solid green;
} */

* {
    margin: 0px;
    padding: 0px;
}

body {
    font-family: 'Montserrat', sans-serif;
}

.container {
    /* border: 2px solid black; */
    height: 500px;
    width: 750px;
    border-radius: 15px;
    margin: 0 auto;
    box-shadow: 2px 2px 6px 1px rgb(215, 195, 170);
    /* box-shadow: 0 14px 28px rgba(0,0,0,0.25), 
			0 10px 10px rgba(0,0,0,0.22); */
    margin-top: 10px;
    display: flex;
}

.container .left {
    /* background-color: whitesmoke; */
    height: inherit;
    width: 50%;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container .left h1 {
    margin-bottom: 20px;
}

.container .left .icon {
    margin-bottom: 20px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;
}

.container .left .icon i {
    /* color: linear-gradient(45deg, #EA738DFF, #89ABE3FF); */
    border: 2px solid #ddd;
    border-radius: 50%;
    padding: 10px;
    color: black;
}

.container .left .p {
    font-size: 13px;
}

.container .email input,
.pswd input,
.name input {
    background-color: #eee;
    border: none;
    padding: 12px 15px;
    margin: 8px 0px 0px 8px;
    width: 250px;
}

.container .left .forgot {
    margin-top: 20px;
    font-size: 15px;
}

.container .left .forgot a {
    text-decoration: none;
    color: black;
}

.container .left .btn #Signin {
    margin-top: 15px;
    height: 40px;
    width: 150px;
    border: none;
    color: white;
    border-radius: 20px;
    /* background-color:  #89ABE3FF; */
    background: linear-gradient(45deg, #EA738DFF, #89ABE3FF);
}

.container .right {
    height: inherit;
    border-radius: 0px 15px 15px 0px;
    width: 50%;
    background: linear-gradient(45deg, #EA738DFF, #89ABE3FF);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: white;
}

.right h1 {
    margin-bottom: 30px;
}

.right p {
    margin: 0px 40px;
    margin-bottom: 20px;
}

#signUp,
#signIn {
    /* background-color: #fff; */
    margin-top: 10px;
    height: 40px;
    width: 150px;
    color: white;
    border: 1px solid white;
    border-radius: 20px;
    background: transparent;
}


.pswd{
    position: relative;
}

.pswd a i{
    position: absolute;
    top: 20px;
    right: 15px;
    color: black;
    /* font-size: 14px; */
    text-decoration: none;
    letter-spacing: -1px;
}

.container #left-hide, #right-hide{
    display: none;
}
/* button{
    transition: transform 80ms ease-in;
} */
!

JS 

              
                $(document).ready(function () {
	$("#txtEmail").blur(function () {
		var exp = /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/;
		var email = $("#txtEmail").val();

		if (exp.test(email) == true) {
			$(this).css("border", "2px solid green");
		} else {
			$(this).css("border", "2px solid red");
		}
	});
    $("#txtEmail1").blur(function () {
		var exp = /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/;
		var email = $("#txtEmail1").val();

		if (exp.test(email) == true) {
			$(this).css("border", "2px solid green");
		} else {
			$(this).css("border", "2px solid red");
		}
	});

	$("#pswd").blur(function () {
		var pass = $("#pswd").val();
		var r = /(?=^.{8}$)(?=.*\d)(?=.*[!@#$%^&*]+)(?![.\n])(?=.*[A-Z])(?=.*[a-z]).*$/;
		if (r.test(pass) == true) {
			$(this).css("border", "2px solid green");
		} else {
			$(this).css("border", "2px solid red");
		}
	});

    $("#pswd1").blur(function () {
		var pass = $("#pswd1").val();
		var r = /(?=^.{8}$)(?=.*\d)(?=.*[!@#$%^&*]+)(?![.\n])(?=.*[A-Z])(?=.*[a-z]).*$/;
		if (r.test(pass) == true) {
			$(this).css("border", "2px solid green");
		} else {
			$(this).css("border", "2px solid red");
		}
	});

    $("#txtName").blur(function () {
		var pass = $("#txtName").val();
        var r=/^[a-zA-Z ]*$/;
		if (r.test(pass) == false || pass.length=="") {
			$(this).css("border", "2px solid red");
		} else {
			$(this).css("border", "2px solid green");
		}
	});

	$(".fa").mouseenter(function () {
		$("#pswd").prop("type", "text");
		$(".fa").removeClass("fa-eye").addClass("fa-eye-slash");
	});

	$(".fa").mouseleave(function () {
		$("#pswd").attr("type", "password");
		$(".fa").removeClass("fa-eye-slash").addClass("fa-eye");
	});

    $(".fa").mouseenter(function () {
		$("#pswd1").prop("type", "text");
		$(".fa").removeClass("fa-eye").addClass("fa-eye-slash");
	});

	$(".fa").mouseleave(function () {
		$("#pswd1").attr("type", "password");
		$(".fa").removeClass("fa-eye-slash").addClass("fa-eye");
	});

	$("#signUp").click(function () {
		// alert("hello");
		$("#left-hide").fadeIn(1000);
		$("#left-div").hide();
		$("#right-div").hide();
		$("#right-hide").slideDown();

	});
	$("#signIn").click(function () {
		// alert("hello");
		$("#left-div").fadeIn(1000);
		$("#left-hide").hide();
		$("#right-hide").hide();
		$("#right-div").slideDown();

	});


});
!
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