style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    height: 100vh;
    width: 100%;
}

h1{
    font-family: sans-serif;
    text-align: center;
    font-size: 30px;
    color: #222;
}

.profile-pic-div{
    height: 200px;
    width: 200px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    border-radius: 50%;
    overflow: hidden;
    border: 1px solid grey;
}

#photo{
    height: 100%;
    width: 100%;
}

#file{
    display: none;
}

#uploadBtn{
    height: 40px;
    width: 100%;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    color: wheat;
    line-height: 30px;
    font-family: sans-serif;
    font-size: 15px;
    cursor: pointer;
    display: none;
}