.window {
    box-sizing: border-box;
    position: relative;
    height: 100%;
    margin: 0 auto;
    padding: 24px;
}

.menu {
    box-sizing: border-box;
    padding: 6px 0 2px 6px;
    background-color: #bbb;
    border-top-right-radius: 5px;
    border-top-left-radius: 5px;
}

.menu > .button {
    box-sizing: border-box;
    display: inline-block;
    width: 11px;
    height: 11px;
    margin: 0 3px;
    border: 1px solid #000000;
    border-radius: 50%;
}

.button.close {
    box-sizing: border-box;
    background-color: #ff3b47;
    border: 1px solid #9d252b;
}

.button.minimize {
    box-sizing: border-box;
    left: 11px;
    background-color: #ffc100;
    border-color: #9d802c;
}

.button.zoom {
    box-sizing: border-box;
    left: 16px;
    background-color: #00d742;
    border-color: #049931;
}