body {
    height: 100vh;
    width: 100vw;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgb(230,230,230);
}

.container {
    display: flex;
    flex-direction: column;
    width: calc(100vw - 52px);
    height: calc(100vh - 52px);
    background-color: rgb(229, 229, 229);
    border: 1px solid black;
    box-sizing: border-box;
    padding: 20px;  
    justify-content: center;
    align-items: center;
}

.spider {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 80%;
    margin: auto;
}