.absCenter {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100%;
}

.card {
    border: 2px solid black;
    background-color: #eeeeee;
    padding: 10px;
    margin: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.monobold {
    font-weight: bold;
    font-family: monospace;
}

#validHashMessage {
    font-size: large;
    display: none;
    color: SeaGreen;
}
#invalidHashMessage {
    font-size: large;
    display: none;
    color: FireBrick;
}

/* Use tool on target section */
#invalidToolMessage {
    display: none;
    color: FireBrick;
}
#invalidTargetMessage {
    display: none;
    color: FireBrick;
}
#useToolResult {
    font-family: serif;
    font-size: large;
    display: none;
    color: SeaGreen;
}

/* Buttons */
#buttonSection {
    display: table;
    table-layout: fixed;
    border-spacing: 10px;
}
.buttonRow {
    display: table-row;
}
.buttonCell {
    display: table-cell;
    height: 150px;
    width: 150px;
    border-spacing: 10px;
    text-align: center;
}
.buttonCell > div {
    display: inline-block;
}
.buttonExample {
    display: none;
}
.buttonImage {
    height: 100px;
    width: 100px;
    background-size: 100%;
}
.buttonLabel {
    font-weight: bold;
    font-family: monospace;    
}

/* Button enablement section */
#historyInstruction {
    display: none;
}
#enablementHistory {
    font-weight: bold;
    font-family: monospace;
    display: none;
}