body {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    height: 100%;
    width: 100%;
    background: #000921;
    font-family: sans-serif;
    color: #aaa;
}
.selectThis {
    height: 150px;
    width: 150px;
    display: inline-block;
}
input {
    display: block;
    background: transparent;
    border: 1px solid #656565;
    padding: 5px 10px;
    border-radius: 5px;
    outline: none;
    color: #aaa;
}
.appArea {
    text-align: center;
}