.block {
    background-color: rgb(133, 142, 139);
    box-sizing: border-box;
    width: 1000px;
    height: 500px;
    overflow: auto;
    border-top-left-radius: 40px;
    border-bottom-left-radius: 40px;
    border: 5px solid #000;
    
}
.text {
    background-color: blueviolet;
    width: 200px;
    height: 185px;
    display: inline-block;
    margin: 10px;
    padding: 10px;
    border-radius: 20px;
    box-shadow: inset 5px 5px 50px;
    
}