.ai-content-box { border-radius: 8px;
background-color: #f9f9f9;
position: relative;
} .ai-content-box::before {
content: "";
position: absolute;
top: -5px; left: -5px;
right: -5px;
bottom: -5px;
z-index: -1;
background: linear-gradient(45deg, red, yellow, blue, green);
border-radius: 10px; }