* {
    box-sizing: border-box;
}

p {
    font-size: 25px;
}

.parent {
    width: auto;
    height: 800px;
    background: #f2e9ff;
    border: 1px solid #000;
    border-top-left-radius: 40px;
    border-bottom-left-radius: 40px;
    overflow: auto;   
}

.child {
    margin: 10px;
    padding: 40px;
    width: 400px;
    background: #e2c3a2;
    border-radius: 30px;
    box-shadow: inset 0 0 15px #3f3154;
    display: inline-block;
}