.particle-container {
    position: absolute;
    overflow: hidden;
}

.particle-heSinhThai {
    right: 50px;
    top: 0;
    width: 50%;
    height: 100%;
    border-radius: 50%;
}

.particle-heSinhThai > #particle-heSinhThai {
    position: absolute;
    width: 100%;
    height: 100%;
} 

.particle-linhVuc {
    left: 0;
    bottom: 0;
    width: 400px;
    height: 400px;
}

.particle-linhVuc > #particle-linhVuc {
    position: absolute;
    width: 100%;
    height: 100%;
}