index.css

*{
    margin: 0;
    padding: 0;
}
body{
    
    background-size: cover;
    min-height: 100vh;
    font-family: sans-serif, serif;

}
.container{
    min-width: 100%;
    height: 100vh;
    background-image: url("bg.jpg");
    
}
.part{
    /* to center anything aexactly 50% from all sides*/
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    /* ---------------------------------- */

    background-color: rgba(0,0,0,0.8);
    color: white;
    width: 300px;
    height: 320px;
    box-shadow: 0px -5px 50px 10px rgba(0,0,0,1);

}
.image{
    width: 130px;
    height: 130px;
    border-radius: 50%;
    margin-left: 85px;
    margin-top: -50px;
    filter: grayscale(.7);
}
h1{
    position: relative;
    color: white;
    margin-left: 30%;
    margin-top: 10%;
    font-family: 'Just Another Hand', cursive;
    font-family: sans-serif, serif;
    font-weight: bold;
}
.user{
    margin-left:6%;
    margin-top:1%;

}
.pass{
    margin-left:6%;
    margin-top:3%;

}
#pass,#user{
    width: 260px;
    height: 40px;
    background-color: rgba(90, 88, 88, 0.2);
    border-radius: 5px;
    color: grey;
    border: 2px solid  rgba(0, 0, 0,.5);;
    

    
}
#user::placeholder {
    color: rgb(255, 255, 255);
    
    padding: 10px;
  }
#pass::placeholder {
    color: rgb(255, 255, 255);
    
    padding: 10px;
  }

#button{
    border-radius: 20px;
    width: 250px;
    margin-left:8%;
    margin-top:5%;
    background-color: black;
    color: white;
    border: 2px solid white;
}

#button:hover{
    background-color: #333333;
    color: grey;
}