main.css

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background: radial-gradient(ellipse at top, #2a4765, transparent),
                radial-gradient(ellipse at bottom, black, transparent);
    background-color: black;
    overflow: hidden;
}

body {
    display: flex;
    flex-direction: row;
    align-items: center;
}

#icon {
    -webkit-app-region: drag;
    width: 24px;
    height: 100%;
    padding: 1px 6px;
}

#close-svg {
    width: 32px;
    height: 16px;
}

#close-btn {
    height: 100%;
    outline: 0;
    border: 0;
    background-color: transparent;
}

#close-btn:hover {
    background-color: red;
}

#password-entry {
    background-color: #272C36;
    outline: none;
    border: none;
    flex-grow: 1;
    height: 100%;
    color: green;
    caret-color: greenyellow;
}