.card {
/* other styles */
background: rgba(255, 255, 255, .7);
-webkit-backdrop-filter: blur(10px);
backdrop-filter: blur(10px);
}
background: linear-gradient(0deg, rgba(2,173,231,0.5), rgba(2,173,231,0.5)), url(images/mba-grid-5px-bg.png) repeat;