body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(to bottom, #0f0c29, #302b63, #24243e);
    font-weight: bold;
}

.main {
    width: 350px;
    height: 500px;
    background:#fff;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 5px 20px 50px #000;
}

#chk {
    display: none;
}

.signup {
 
    position: relative;
    width: 100%;
    height: 100%;
}   

label {
    
    color: #00881d;
    font-size: 2.3em;
    justify-content: center;
    display: flex;
    margin: 60px;
    font-weight: bold;
    cursor: pointer;
    transition: .5s ease-in-out;
}

input {
  
    width: 60%;
    height: 20px;
    background: #f3f8f4;
    justify-content: center;
    border:1px solid #00881d;
    display: flex;
    margin: 20px auto;
    padding: 10px;
    outline: none;
    border-radius: 5px;
}

button {
    width: 60%;
    height: 40px;
    margin: 10px auto;
    justify-content: center;
    display: block;
    color: #fff;
    background: #00881d;
    font-size: 1em;
    font-weight: bold;
    margin-top: 20px;
    outline: none;
    border: none;
    border-radius: 5px;
    transition: .2s ease-in;
    cursor: pointer;
}

button:hover {
    background:#01a424;
}

.login{
height: 460px;
background:#dbd9d9;
border-radius: 60% / 10%;
transform: translateY(-180px);
transition: .8s ease-in-out
}



.login label{
color:#00881d;
transform: scale(.6);


}

#chk:checked ~ .login{
transform: translateY(-500px);

}

#chk:checked ~ .login label{
transform: scale(1);
}

#chk:checked ~ .signup label{
    transform: scale(.6);
}