html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    border: 0;
}

ul,
li {
    list-style: none;
    display: block;
    padding: 0;
    margin: 0;
}

#container {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
}

.info {
    position: absolute;
    right: 20px;
    top: 10px;
    width: 40px;
    height: 40px;
    font-size: 26px;
    border-radius: 50%;
    background-color: #1890ff;
    color: #fff;
    text-align: center;
    line-height: 40px;
    display: block;
    text-decoration: none;
}

.steps {
    position: absolute;
    right: 20px;
    top: 50%;
    margin-top: -120px;
}

.step::after {
    content: '';
    display: block;
    width: 1px;
    height: 40px;
    margin: 10px 21px 10px;
    background: #1890ff;
}

.step:nth-child(3)::after {
    display: none;
}

.step-state {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: transparent;
    cursor: pointer;
    line-height: 39px;
    text-align: center;
    font-size: 16px;
    color: #1890ff;
    background-color: #1890ff;
    background-position: center;
}

.icon {
    width: 36px;
    height: 36px;
    margin: 4px;
    display: inline-block;
    background-position: center;
    background-repeat: none;
    background-size: cover;
}

.icon.sphere {
    background-image: url(dist/sphere.svg);
}

.icon.cylinder {
    background-image: url(dist/cylinder.svg);
}

.icon.plane {
    background-image: url(dist/plane.svg);
}

.icon.line {
    background-image: url(dist/line.svg);
}

.icon.rect {
    background-image: url(dist/rect.svg);
}

.step-state.active {
    background-color: #1890ff;
    color: #fff;
}