body {
    background-color: #181818;
    font-family: 'Roboto', sans-serif;
}

button {
    border: 0;
    margin: 0;
    padding: 0;
}

.title {
    margin-top: 50px;
    text-align: center;
    font-size: 24px;
    color: white;
}

.box-roulette {
    position: relative;
    margin: 50px auto;
    width: 500px;
    height: 500px;
    border: 10px solid #ccc;
    border-radius: 50%;
    background: #ccc;
    overflow: hidden;
}

.box-roulette .markers {
    position: absolute;
    left: 50%;
    top: 0;
    margin-left: -25px;
    width: 0;
    height: 0;
    border: 25px solid #fff;
    border-left-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
    z-index: 9999;
}

.box-roulette .roulette {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.box-roulette .item {
    position: absolute;
    top: 0;
    width: 0;
    height: 0;
    border: 0 solid transparent;
    transform-origin: 0 100%;
}

.box-roulette .label {
    position: absolute;
    left: 70px;
    top: -95px;
    color: #fff;
    white-space: nowrap;
    transform-origin: 0 0;
}

.box-roulette .label .text {
    display: inline-block;
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
    vertical-align: middle;
    max-width: 80px;
}

#btn-start {
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    margin: -50px 0 0 -50px;
    width: 100px;
    height: 100px;
    font-weight: bold;
    background: #fff;
    border-radius: 50px;
    z-index: 9999;
    cursor: pointer;
    outline: none;
}