body {
    background-image: url(../img2/background.jpg);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding-top: 50px;
}
.login-container {
    width: 700px;
}
#login-ip {
    color: #38b7ff;
    font-size: 14px;
    margin-bottom: 10px;
}
#login-ip span {
    color: #ffffff;
}
#login-display {
    text-align: center;
    font-size: 80px;
    height: 100px;
    line-height: 100px;
    margin-bottom: 20px;
    color: #ffffff;
}
.keypad-row {
    margin-bottom: 5px;
    height: 130px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.keypad-btn {
    width: 218px;
    height: 130px;
    text-align: center;
    font-size: 110px;
    line-height: 130px;
    cursor: pointer;
    user-select: none;
}
.keypad-btn:active {
    background-color: #336699;
}
.keypad-btn.ok {
    color: #00ff00;
}
.keypad-btn.del {
    color: #ffff00;
}