body {
    background-image: url("../IMAGES/arka plan.jpg");
    background-size:cover;
    background-repeat:no-repeat;

}

.divCss
{
    width : 300px;
    height : 400px;
    padding:30;
    background-color : #74c365;
    position: absolute;
    left: 40%;
    top: 20%;
    border-style:groove;
    border-radius: 15px;
    background-color: rgba(60, 179. 113, 0.8);
}

.lblGirisCss {
    position: absolute;
    margin-left: 30%;
    margin-top: 85px;
    top: -2px;
    left: -11px;
}

.txtKullaniciAdiCss {
    position: absolute;
    margin-left: 15%;
    margin-top: 110px;
    width: 207px;
    border-width: 0 0 3px 0;
    background-color: #3cb37;
    top: 33px;
    left: 9px;
    background-image: url("../IMAGES/username.jpg");
    background-repeat:no-repeat;
    background-size:20px;
    padding-left: 23px;
    
}

.txtSifreCss {
    position: absolute;
    margin-left: 15%;
    margin-top: 110px;
    width: 207px;
    border-width: 0 0 3px 0;
    background-color: #3cb37;
    top: 61px;
    left: 11px;
    background-image: url("../IMAGES/userpasword.jpg");
    background-repeat: no-repeat;
    background-size: 20px;
    padding-left:23px;
}

.btnGirisCss {
    position: absolute;
    margin-left: 15%;
    margin-top: 110px;
    width: 207px;
    border-width: 0 0 0 0;
    background-color: #3cb37;
    height: 30;
    top: 100px;
    left: 14px;
}

    .btnGirisCss:hover {
        position: absolute;
        margin-left: 15%;
        margin-top: 120px;
        width: 207px;
        background: red;
        color: white;
        border-width: 3px 3px 3px 3px;
        background-color: #3cb37;
    }