<div class="signup-form">
      <form class="" action="index.html" method="post">
        <h1>Sign Up</h1>
        <input type="text" placeholder="Full Name" class="txtb">
        <input type="email" placeholder="Email" class="txtb">
        <input type="password" placeholder="Password" class="txtb">
        <input type="submit" value="Create Account" class="signup-btn">
        <a href="#">Already Have one ?</a>
      </form>
    </div>
body{
  margin: 0;
  padding: 0;
  background: #487eb0;
}
.signup-form{
  width: 300px;
  padding: 20px;
  text-align: center;
  background: url(https://res.cloudinary.com/drcrre4xg/image/upload/v1571359955/bg_z91s8y.png);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  overflow: hidden;
}
.signup-form h1{
  margin-top: 100px;
  font-family: 'Permanent Marker', cursive;
  color: #fff;
  font-size: 40px;
}
.signup-form input{
  display: block;
  width: 100%;
  padding: 0 16px;
  height: 44px;
  text-align: center;
  box-sizing: border-box;
  outline: none;
  border: none;
  font-family: "montserrat",sans-serif;
}
.txtb{
  margin: 20px 0;
  background: rgba(255,255,255,.5);
  border-radius: 6px;
}
.signup-btn{
  margin-top: 60px;
  margin-bottom: 20px;
  background: #487eb0;
  color: #fff;
  border-radius: 44px;
  cursor: pointer;
  transition: 0.8s;
}
.signup-btn:hover{
  transform: scale(0.96);
}
.signup-form a{
  text-decoration: none;
  color: #fff;
  font-family: "montserrat",sans-serif;
  font-size: 14px;
  padding: 10px;
  transition: 0.8s;
  display: block;
}
.signup-form a:hover{
  background: rgba(0,0,0,.3);
}
/*
* Link: https://www.darkcode.info/2019/01/awesome-sign-up-form-using-only-html-css.html
*/
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