*,
*:before,
*:after{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    height: 100vh;
    background: linear-gradient(
        135deg,
        #61d954,
        #2ebf75
    );
}
form{
    background-color: #202020;
    height: 450px;
    width: 400px;
    position: absolute;
    margin: auto;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    border-radius: 8px;
    box-shadow: 0 20px 25px rgba(0,0,0,0.35);
    padding: 0 50px;
}
form *{
    border: none;
    outline: none;
    font-family: "Poppins",sans-serif;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.5px;
}
input{
    display: block;
    height: 2px;
    width: 300px;
    position: absolute;
    background-color: #4d4d4d;
    color: #ffffff;
    padding: 0 15px;
    font-weight: 300;
    border-radius: 5px;   
    transition: 0.5s all;
}
label{
    display: inline-block;
    color: #e5e5e5;
    cursor: pointer;
    font-size: 12px;
    position: absolute;
    transition: 0.5s all;
}
#username{
    bottom: 305px;
}
label[for = "username"]{
    bottom: 310px;
}
#password{
    bottom: 195px;
}
label[for = "password"]{
    bottom: 200px;
}
::placeholder{
    color: transparent;
}
.my-style::placeholder{
    color: #a5a5a5;
}
button{
    width: 300px;
    position: absolute;
    bottom: 75px;
    padding: 15px 0;
    background-color: #2ebf75;
    color: #ffffff;
    border-radius: 5px;
}