.my-block {
border: 1px solid #fff;
border-radius: 5px;
background-color: #00ff00;
padding: 20px;
color: #000;
font-size: 16px;
}
.my-block h2 {
font-size: 24px;
margin-bottom: 10px;
}
.my-block p {
font-size: 18px;
line-height: 1.5;
margin-bottom: 20px;
}