*{ margin:0px; padding:0px;}
body 
{
    line-height:1.5;
    font-family:微软雅黑;
}
a{ text-decoration:none;}
ul,li{ list-style:none; }

.bg{ 
    position: relative;
    min-height: 720px;
    background: linear-gradient(to bottom right, #3948a0, #2196F3);
}

#particles-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 0;
}