body {
    background: #9000ff;
    font-family: "Roboto", "Lucida Grande", sans-serif;
    font-size: 13px;
    margin: 0;
    padding: 0;
}

#container{
    width: 70%;
    margin: 150px auto;
    background: #fafafa;
    padding: 20px;
}
::-webkit-input-placeholder {
    /* WebKit, Blink, Edge */
    opacity: 0.3;
}

:-moz-placeholder {
    /* Mozilla Firefox 4 to 18 */
    opacity: 0.3;
}

::-moz-placeholder {
    /* Mozilla Firefox 19+ */
    opacity: 0.3;
}

:-ms-input-placeholder {
    /* Internet Explorer 10-11 */
    opacity: 0.3;
}

::-ms-input-placeholder {
    /* Microsoft Edge */
    opacity: 0.3;
}