* {
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}

.container {
    width: 100vw;
    height: 100vh;
    background: url('../image/index.png') no-repeat;
    background-size: 100% 100%;
    position: relative;
}

.buttonWrap {
    display: flex;
    align-items: center;
    position: absolute;
    top: 80%;
    left: 100px;

}

.btn {
    width: 247px;
    height: 76px;
    background-color: aqua;
    margin-right: 30px;
    border-radius: 38px;
    cursor: pointer;
}

.introduceProject {
    background: url('../image/btn3.png') no-repeat;
    background-size: 100% 100%;
}

.introduceVideo {
    background: url('../image/btn1.png') no-repeat;
    background-size: 100% 100%;
}

.openExperiment {
    background: url('../image/btn2.png') no-repeat;
    background-size: 100% 100%;
}

.overLoading {
            display: none;
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: #f5f5f5;
            opacity:0.5;
            z-index: 1000;
}

.layoutLoading {
        display: none;
        position: absolute;
        top: 40%;
        left: 40%;
        width: 20%;
        height: 20%;
        z-index: 1001;
        text-align:center;
}


#userName {
    color: #fff;
    font-size: 32px;
    width: 100%;
    text-align: right;
    box-sizing: border-box;
    padding: 50px 50px;
    
}