* {
    box-sizing: border-box;
}

.shell {
    max-width: 1920px;
    max-height: 600px;
    min-width: 500px;
    min-height: 300px;
    background-color: rgb(251, 246, 255);
    overflow: auto;
    border: 1px solid #000;
    border-top-left-radius: 30px;
    border-bottom-left-radius: 30px;

}

.inside {
    max-width: 300px;
    max-height: 300px;
    min-width: 200px;
    min-height: 200px;
    display: inline-block;
    background-color: rgb(192, 166, 134);
    border: 1px solid #000;
    border-radius: 10px;
    padding: 30px 7px 10px;
    margin: 10px;
    margin-left: 5px;
    margin-bottom: 15px;
    box-shadow: inset .1px .1px 5px #000;
}