.mark {
    background: #FFFF00;
    cursor: pointer;
    padding: 0px;
}
button.highlight-btn {
    background: #2B9ED8;
    border: 1px solid #2B9ED8;
    border-radius: 4px;
    color: #fff;
    display: inline-block;
    font-family: FontAwesome, Open Sans, Source Sans Pro, sans-serif;
    font-weight: 600;
    height: 44px;
    line-height: 44px;
    overflow: visible;
    padding: 0px;
    width: 44px;
}

button.highlight-btn {
    -moz-box-shadow: 2px 2px 4px 0px rgba(51, 51, 51, 0.5);
    -webkit-box-shadow: 2px 2px 4px 0px rgba(51, 51, 51, 0.5);
    box-shadow: 2px 2px 4px 0px rgba(51, 51, 51, 0.5);
    display: none;
    position: fixed;
}

button.highlight-btn::after {
    border: solid transparent;
    border-bottom-color: #2B9ED8;
    border-color: rgba(43, 158, 216, 0);
    border-width: 10px;
    bottom: 100%;
    content: " ";
    height: 0;
    left: 50%;
    margin-left: -10px;
    pointer-events: none;
    position: absolute;
    width: 0;
}

button.highlight-btn img {
    height: 30px;
    padding: 5px;
    width: 30px;
}

.allow-select {
    -khtml-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    -webkit-touch-callout: text;
    -webkit-user-select: text;
    cursor: default;
}

.no-select {
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    cursor: default;
    user-select: none;
}
