.content {
    display: none;
}

.content.show {
    display: block;
}

#percentile-tooltip {
    display: none;
    position: absolute;
    left: 45%;
    top: 45%;
    width: 160px;
    height: 100px;
    background-color:  white;
    border: 1px solid black;
    border-radius: 5px;
}

#percentile-tooltip > button, label {
    display: inline;
    margin: 10px;
}

#percentile-tooltip > input {
    display: inline;
    width: 50px;
}