main > .container {
    padding: 70px 15px 20px;
}

.footer {
    background-color: #f5f5f5;
    font-size: .9em;
    height: 60px;
}

.footer > .container {
    padding-right: 15px;
    padding-left: 15px;
}

.not-set {
    color: #c55;
    font-style: italic;
}

/* add sorting icons to gridview sort links */
a.asc:after, a.desc:after {
    content: '';
    left: 3px;
    display: inline-block;
    width: 0;
    height: 0;
    border: solid 5px transparent;
    margin: 4px 4px 2px 4px;
    background: transparent;
}

a.asc:after {
    border-bottom: solid 7px #212529;
    border-top-width: 0;
}

a.desc:after {
    border-top: solid 7px #212529;
    border-bottom-width: 0;
}

.grid-view th {
    white-space: nowrap;
}

.hint-block {
    display: block;
    margin-top: 5px;
    color: #999;
}

.error-summary {
    color: #a94442;
    background: #fdf7f7;
    border-left: 3px solid #eed3d7;
    padding: 10px 20px;
    margin: 0 0 15px 0;
}

/* align the logout "link" (button in form) of the navbar */
.nav li > form > button.logout {
    padding-top: 7px;
    color: rgba(255, 255, 255, 0.5);
}

@media(max-width:767px) {
    .nav li > form > button.logout {
        display:block;
        text-align: left;
        width: 100%;
        padding: 10px 0;
    }
}

.nav > li > form > button.logout:focus,
.nav > li > form > button.logout:hover {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.75);
}

.nav > li > form > button.logout:focus {
    outline: none;
}

.form-group {
    margin-bottom: 1rem;
}

/* Keep rich-content question images inside their card on desktop and mobile.
 * TextProtector character images and generated answer badges are intentionally
 * excluded because their inline dimensions are part of the rendering. */
.practice-question img:not(.question-inline-formula):not([aria-hidden="true"]):not([src*="/answer-image/"]),
.exam-take img:not(.question-inline-formula):not([aria-hidden="true"]):not([src*="/answer-image/"]),
.exam-result .result-item img:not(.question-inline-formula):not([aria-hidden="true"]):not([src*="/answer-image/"]),
.share-question-page .panel-body img:not(.question-inline-formula):not([aria-hidden="true"]):not([src*="/answer-image/"]),
.qv-card img:not(.question-inline-formula):not([aria-hidden="true"]):not([src*="/answer-image/"]) {
    max-width: 100% !important;
    height: auto !important;
    object-fit: contain;
    box-sizing: border-box;
}

.practice-question img.question-inline-formula,
.exam-take img.question-inline-formula,
.exam-result .result-item img.question-inline-formula,
.share-question-page .panel-body img.question-inline-formula,
.qv-card img.question-inline-formula {
    max-width: none !important;
}

/* Inline answer fields embedded in short/proof sub-question text. */
.sub-question-inline-input {
    display: inline-block;
    width: 160px;
    max-width: 100%;
    padding: 5px 9px;
    margin: 2px 5px;
    border: 1px solid #b7c5e2;
    border-width: 0 0 2px;
    border-radius: 3px;
    background: #f0f4ff;
    color: #253858;
    font-size: 14px;
    line-height: 1.5;
    text-align: center;
    vertical-align: baseline;
}

.sub-question-inline-input:focus {
    border-color: #667eea;
    outline: 2px solid rgba(102, 126, 234, .2);
    outline-offset: 1px;
}