body {
    overflow:hidden;
}
.login-panel {
    width: 300px;
    margin-left: auto;
    margin-right: auto;
    margin-top:15%;
    margin-bottom:15%;
}
.login-panel .input-group {
    margin-bottom: 10px;
}
.btn{
    outline: none;
    border:none;
}
.form-group {
    margin-bottom: 0px;
}
.login-btn{margin:0 100px;}