.backgroundWave {
    background: radial-gradient(circle, rgb(161, 161, 161,1) 0%, rgb(101, 101, 101,1) 100%);
}

div.contentsBoxHeader {
    background: radial-gradient(circle, rgb(161, 161, 161,1) 0%, rgb(101, 101, 101,1) 100%);
}