.primary {
    color: #31940F;
    text-transform: capitalize;
}

.secondary {
    color: #0000FF;
    text-transform: capitalize;
}

.corners-container {
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
}


div.category {
    font-size: 1.8em;
}

img.category {
    display: block;
    width: 120px;
    max-width: 100%;
    height: auto;
}

.stimulus-container {
    display: flex;
    flex-flow: row nowrap;
    justify-content: center;
    align-items: center;
    min-height: 160px;
}

p.stimulus {
    font-size: xx-large;
    height: 235px;
    display: flex;
    justify-content: center;
    align-items: center;
}

img.stimulus {
    height: 250px;
    max-height: 100%;
}

.feedback {
    width: 2em;
    height: 2em;
    margin: 0 auto;
}

.feedback .form-control {
    display: inline;
    background-color: transparent;
    border: none;
    font-weight: bold;
    font-size: x-large;
}



.hidden {
    display: none !important;
}


.key {
    font-family: monospace;
    text-transform: uppercase;
}

#progress-bar {
    width: 100%;
}

.otree-title {
    display: none;
}

p.error-msg {
    font-size: 1.8em;
}