body,html{
    margin:0;
    padding:0;
}
.main{
    height: calc(100vh);
    background-image: url("../images/mainBg.png");
    background-size: cover;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}
.btnGroup{
    display: flex;
}
.btnGroup .item{
    flex: 1;
    position: relative;
}
.btnGroup .item .text{
    display: flex;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.btnGroup .item .text span{
    margin-left:15px;
    font-family: PingFang SC;
    font-weight: bold;
    font-size: 36px;
    color: #FFFFFF;
}