.bannerbg{
      position: absolute;
      width: 100%;
      height: 62vh;
      overflow: hidden;
      top: 0;
      left: 0;
      margin: 0;
    }
	
.lanmu {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 62vh;
    position: relative;
    background: transparent;
    text-align: center;
    padding: 0 2em;
}

#main-title {
    color: white;
    font-size: 42px;
    animation: fadeIn ease 2s;
    /*font-family: siyuanHeavy;*/
    font-weight: 900;
	font-family: NSimSun;
}
#main-title-en {
    color: white;
    font-size: 30px;
    letter-spacing: normal;
    animation: fadeInEn ease 3s;
    font-family: NSimSun;
    margin-top: 20px;
	font-weight: 600;
}

@media screen and (max-width: 768px) and (min-width: 320px){
	.bannerbg{
      position: absolute;
      width: 100vw;
      height: 26vh;
      overflow: hidden;
      top: 0;
      left: 0;
      margin: 0;
    }
	
.lanmu {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 20vh;
    position: relative;
    background: transparent;
    text-align: center;
    padding: 0 2em;
}

#main-title {
    color: white;
    font-size: 30px;
    animation: fadeIn ease 2s;
    font-family: siyuanHeavy;
    font-weight: 400;
}
#main-title-en {
    color: white;
    font-size: 20px;
    letter-spacing: normal;
    animation: fadeInEn ease 3s;
    font-family: siyuanHeavy;
    margin-top: 20px;
    font-weight: normal;
}
	
}