body, html {
    font-family: 'Open Sans', sans-serif;
    background-color: #3F3E3E;
}

header {
    text-align: center;
}

header .vitas-avatar {
    width: 60px;
    border-radius: 100%;
}

header h1 {
    margin: 10px 0;
    font-size: 14px;
    text-transform: uppercase;
    color: #FFF;
}

ul.keys-panel {
    list-style: none;
    max-width: 540px;
    padding: 0;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.keys-panel .key {
    background: #303030;
    width: 22%;
    margin: 5px;
    border-radius: 4px;
    opacity: .8;
    cursor: pointer;
    transition: all .2s;
}

.keys-panel .key.active {
    opacity: 1;
    transform: scale(1.05);
}

.keys-panel .key:before{
    content: "";
	display: block;
	padding-top: 100%;
}

.keys-panel .key.active:first-child,
.keys-panel .key.active:nth-child(2),
.keys-panel .key.active:nth-child(3),
.keys-panel .key.active:nth-child(10),
.keys-panel .key.active:nth-child(11),
.keys-panel .key.active:nth-child(12) {
    background-color: #89EA92;
}

.keys-panel .key.active:nth-child(4),
.keys-panel .key.active:nth-child(5),
.keys-panel .key.active:nth-child(6),
.keys-panel .key.active:nth-child(13),
.keys-panel .key.active:nth-child(14),
.keys-panel .key.active:nth-child(15) {
    background-color: #F58B78;
}

.keys-panel .key.active:nth-child(7),
.keys-panel .key.active:nth-child(8),
.keys-panel .key.active:nth-child(9),
.keys-panel .key.active:nth-child(16) {
    background-color: #b598f4;
}