html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    font-family: Arial, Helvetica, sans-serif;
}

.section-button {
    width: 100%;
    background-color: #555;
    color: #fff;
    height: 40px;
    font-size: 20px;
    font-family: 'Source Sans Pro', sans-serif;
    text-align: left;
    outline: none;
    cursor: pointer;
    text-transform: uppercase;
}

.section-button:hover {
    background-color: #666;
}

.section-button img {
    width: 20px;
    height: 20px;
    margin: 10px;
    transition-duration: 0.2s;
    transition-property: transform;
    vertical-align: middle;
}

.section-selected img {
    transform: rotate(90deg);
}

.selector-tab {
    display: none;
    width: 100%;
    text-align: center;
    margin: 0 auto;
}

#model-name {
    float: right;
    text-transform: uppercase;
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    margin-left: 20px;
    line-height: 40px;
    border-radius: 0px;
    padding-right: 20px;
}

.model-selector-container {
    width: 20%;
    display: inline-grid;
    margin: 1em auto;
    padding: 0 1em;
}

.model-selector-header {
    width: 100%;
    margin: 0 auto;
    background-color: #e29100;
    color: #fff;
    font-size: 18px;
    font-family: 'Source Sans Pro', sans-serif;
    line-height: 2.0;
    text-transform: uppercase;
    border-radius: 20px;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    position: relative;
    margin-bottom: 20px;
    cursor: pointer;
}

.blue-selector {
    background-color: #0836bf;
}

.motor-value-list {
    display: none;
    background-color: #f3bb5a;
    color: #fff;
    width: 100%;
    margin: 0 auto;
    font-size: 16px;
    font-family: 'Source Sans Pro', sans-serif;
    cursor: pointer;
    overflow: auto;
    max-height: 200px;
}

.motor-value-list div {
    line-height: 40px;
    border-bottom: 1px solid #e29100;
}

.blue-list {
    background-color: #c1c2c4;
}

.blue-list div {
    border-bottom: 1px solid #0836bf;
}

#shape-selector-tab div {
    margin: 1em;
    display: inline-block;
    text-align: center;
    vertical-align: top;
    width: 100px;
    cursor: pointer;
}

#shape-selector-tab button {
    margin:  1em;
    color: #fff;
    background-color: #535966;
    font-weight: 400;
    font-size: 0.9em;
    padding: 9px 15px;
    text-align: center;
    text-transform: uppercase;
    border-radius: 20px;
}

#shape-selector-tab button:hover {
    background-color: #222;
}