body {

    background-color:black;
color:white;
    font-family:  serif;
}
.form_{
    border-style: solid;
padding:20px;
    width:auto; /* Width or max-width to prevent the box from stretching the whole width of the area */
    height: 50px; /* Must declare a height to center vertically */
    position: fixed; /* Must be position: fixed or position: absolute */
    top: 0; bottom: 0; left: 0; right: 0;
    margin: auto;
}
.cover{
    background-image: url("../img/4.png");

    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
    width: 100%;
    height: 100%;
    position: absolute;

}
input[type=text] {
    color:grey;
    width: 100%;
    box-sizing: border-box;
    border: 2px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    background-position: 10px 10px;
    background-repeat: no-repeat;
    padding: 12px 20px 12px 40px;
}
input[type=password] {
    color:grey;
    width: 100%;
    box-sizing: border-box;
    border: 2px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    background-position: 10px 10px;
    background-repeat: no-repeat;
    padding: 12px 20px 12px 40px;
}