/* ---- reset ---- */ 
body{ margin:0; font:normal 75% Arial, Helvetica, sans-serif; } 
canvas{ display: block; vertical-align: bottom; } 
/* ---- particles.js container ---- */ 
#particles-js{ position:absolute; width: 100%; height: 100%; background-color: #038018; background-image: url("https://khanh.zalô.vn/backgroud.png"); background-repeat: no-repeat; background-size: 100%; background-position: 50% 50%; }