Javascript Can'；t提交表单操作，因为它被overlay-I'；我尝试过Z索引和指针事件：无；CSS/React

在css上分层后，我的react组件中的按钮不再可单击。我怀疑它被背景/覆盖层隐藏了。我将按钮包含在一个名为buttons容器的类中，并使用了z-index:-1，但它似乎不起作用。我的Z指数正确吗？谢谢

CSS Code 
*{
  margin: 0px;
  padding: 0px;
}

@import url('https://fonts.googleapis.com/css?family=Exo:400,700');

body {
  font-family: Arial, Helvetica, sans-serif;
  font-style: 20;
  font-family: 'Exo', sans-serif;
  // background-image: linear-gradient(to bottom right, aquamarine, green)
}

.buttons-container{
  z-index: -1;
}

.login-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  // width: 100vw;
  // height: 100vw;
}

.login-logo {
  font-size: 30px;
  margin-top: 40px;
}

.login-subTitle {
  font-size: 14px;
  font-style: italic;
  margin: 20px;
}

.button-container {
  display: flex;
  justify-content: center;
  margin: 40px;
}

.login-buttons {
  height: 25px;
  width: 200px;
  background-color: black;
  color: whitesmoke;
  // border: 2px solid whitesmoke;
  border-radius: 6px;
}

.login-buttons:focus {
  outline: 0;
}

.dice {
  margin: 40px;
}

#register-button {
  margin: 10px;
}

#login-button {
  margin: 10px;
}

#password-input {
  margin: 10px;
}

#username-input {
  margin: 10px; 
}

.waiting-room-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.logo {
  font-size: 30px;
}

.greeting {
  margin: 40px;
  line-height: 120%;
}

.drop-down {
  padding: 20px;
}


.area{
    background: #4e54c8;  
    background: -webkit-linear-gradient(to left, #8f94fb, #4e54c8);  
    width: 100%;
    height:100vh;
    pointer-events:none;
}

.circles{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.circles li{
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    animation: animate 25s linear infinite;
    bottom: -150px;
}

.circles li:nth-child(1){
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}


.circles li:nth-child(2){
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
}

.circles li:nth-child(3){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
  
}

.circles li:nth-child(4){
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 18s;
  
}

.circles li:nth-child(5){
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;

}

.circles li:nth-child(6){
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;

}

.circles li:nth-child(7){
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
 
}

.circles li:nth-child(8){
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
   
}

.circles li:nth-child(9){
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;

}

.circles li:nth-child(10){
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 11s;

}



@keyframes animate {

    0%{
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }

    100%{
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }

}

React组件
从“React”导入React，{Component}；
从“react router dom”导入{Switch，Route}；
// https://reacttraining.com/react-router/web/guides/quick-start
//导入每个页面的主容器：登录、配置文件、会话页面
从“./containers/Login.jsx”导入登录名；
从“./containers/WaitingRoom.jsx”导入WaitingRoom；
从“./containers/SessionRoom.jsx”导入SessionRoom；
导入“./styles.scss”；
类应用程序扩展组件{
建造师（道具）{
超级（道具）；
}
render（）{
返回(












);
}
}
导出默认应用程序；

问题在于是否正确使用z-index来定位按钮，以便单击按钮

在你的CSS中

.buttons-container{
  z-index: -1;
}

这会将按钮容器置于其他元素的下方-将正z轴想象为从页面中向用户伸出，反之，负z轴则朝相反的方向移动

看起来，为了将按钮置于其他所有按钮之上，应该将z索引设置为正而不是负

.buttons-container{
  z-index: -1;
}