making a wave like structure in css (https://jsfiddle.net/7fjSc/9/)

wave.css

#wave {
    position: relative;
    height: 70px;
    width: 600px;
    background: #e0efe3;
}

#wave:before {
    content: "";
    display: block;
    position: absolute;
    border-radius: 100% 50%;
    width: 340px;
    height: 80px;
    background-color: white;
    right: -5px;
    top: 40px;
}

#wave:after {
    content: "";
    display: block;
    position: absolute;
    border-radius: 100% 50%;
    width: 300px;
    height: 70px;
    background-color: #e0efe3;
    left: 0;
    top: 27px;
}