*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100vh;
    color: #fff;
    font-size: 1.2em;
    background: url("guille-unsplash.jpg");
    background-position:bottom;
    background-size: cover;
}
textarea{
    width: 280px;
    height: 200px;
    background: rgba(255, 255, 255, .2);
    border: 1px solid rgba(255, 255, 255, .2);
    box-shadow: 
    5px 5px 5px rgba(255, 255, 255, .2),
    -5px -5px 5px rgba(255, 255, 255, .2);
    outline: none;
    border-radius: 5px;
    font-size: 25px;
    color: #fff;
}
span{
    color: #fff;
}