main{
    background: #2a2a2a;
    padding-bottom: 110px;
    padding-top: 110px;
}

main .download-box{
    text-align: center;
   
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}

main .download-box .title{
    font-size: 30px;
    color: white;
    cursor: pointer;
}

main .download-box .windows-tips{
    margin-top: 20px;
    color: #83ad65;
    font-size: 14px;
  cursor: pointer;
}

.download-btn{
    margin-top: 60px;
}

main .download-box .tips-box{
    color: white;
    margin-top: 65px;
    font-size: 33px;
}

main .download-box .tips-box p{
    margin-bottom: 8px;
}

main .abstract-box{
    margin-top: 55px;
    color: white;
    font-size: 16px;
   
}

main .abstract-box img{
    width: 750px;
    margin-top: 40px;
}