body {
    overflow: hidden;
}

div {
    position: absolute;
}

.button {
    background: black;
    color: white;
    text-align: center;
    line-height: 50px;
}

.slider {
    background: blue;

    border-radius: 10000px;
}

textarea {
    position: absolute;
    top: 20px;
    left: 106px;
    width: 200px;
    height: 100px;
    z-index: 100;

    border: none;
    resize: none;

    background: black;
    color: white;
}