.stack-container {
    display: flex;
    justify-content: space-around;
    align-items: flex-end;
    width: 90%;
    font-size: 16px;
}

.cell-output-stdout {
    border-radius: 5px;
    background-color: black;
}

.cell-output-stdout pre code {
    color: white !important;
}

.stack {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stack-title {
    font-weight: bold;
    margin-top: 10px;
    text-align: center;
}

.stack-box {
    width: 80px;
    height: 40px;
    display: block;
    border: 1px solid #000;
    padding: 5px;
    margin-left: 5px;
    margin-right: 5px;
    margin-top: 2px;
    text-align: center;
    background-color: black;
    color: white;
    font-family: Consolas, monospace;
    
}

.empty {
    border: none;
    background: none;
    color: #ccc;
}

.transition {
    height: 2px;
    width: 1px;
    background: #000;
    margin: -5px 0;
}