.nomargin {
    margin: 0;
}
.wellmargin {
    margin: 0.25em 1em;
}
.nopadding {
    padding: 0;
}
.wellpadding {
    padding: 0.25em 1em;
}


.infobox {
    margin: 0;
    padding: 0 1.5em;
    background: $major-color;
    border: 1px solid $border-color;
}
.remarkbox {
    margin: 0;
    padding: 0 1.5em;
    background: $minor-color;
    border: 1px solid $border-color;
}


.quote {
    margin: 0;
    padding: 0 1.5em;
    border-left: 0.25em solid $major-color;
}
.quote > p:last-child:not(:only-child) {
    text-align: right;
    font-style: italic;
}
.quote > p:last-child:not(:only-child)::before {
    content: "\2014\00a0";
}


.convo {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    margin: .5em;
}
.convo::after {
    content: attr(data-name);
    margin: 0 1em;
}
.convo > p {
    display: inline-block;
    margin: .125em 1em;
    padding: 0.5em 1em;
    border: solid 1px $border-color;
    border-radius: 1em;
}

.convo.left {
  align-content: flex-start;
  align-items: flex-start;
}
.convo.left > p {
    text-align: left;
    margin-right: 5em;
    background-color: $minor-color;
}
.convo.left > p:last-child {
    border-bottom-left-radius: 0;
}

.convo.right {
    align-content: flex-end;
    align-items: flex-end;
}
.convo.right > p {
    text-align: right;
    margin-left: 5em;
    background-color: $major-color;
}
.convo.right > p:last-child {
    border-bottom-right-radius: 0;
}


.figure {
    padding: 0;
    margin: auto;
    border: none;
}
.figure > *:last-child:not(:only-child) {
    color: rgba($font-color, 0.7);
    margin-top: 0.75em;
    text-align: center;
    font-style: italic;
}


.spoiler {
    background: $minor-color;
    color: $minor-color;
}
.spoiler::before {
    content: "spoiler alert!";
    color: $font-color;
}


.oversized {
    @extend .flex, .column;
    padding: 0;
    border: none;
    overflow-x: auto;
    width: calc(100vw - 2em);
    margin-left: calc(1em - ((100vw - 100%) / 2));
    @include mobile {
        width: 100vw;
        margin-left: calc(-1 * ((100vw - 100%) / 2));
    }
}
.oversized > * {
    margin: auto;
    padding: 0;
}


.mainmatter {
    @extend .sep-bottom;
    background: $background-color;
}
.mainmatter::after {
    display: block;
    content: "";
    height: 3em;
}


.container {
    margin: 0 auto;
    padding: 0 1em;
    width: 100%;
    max-width: $content-width;
}


.hidden, .target:not(:target) {
    display: none;
}


.float-left {
    float: left;
    margin-right: 1em;
}

.float-right {
    float: right;
    margin-left: 1em;
}

.clear-float {
    clear: both;
    overflow: auto;
}


.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}


.sep-left {
    border-left: 1px solid $border-color;
}

.sep-right {
    border-right: 1px solid $border-color;
}

.sep-top {
    border-top: 1px solid $border-color;
}

.sep-bottom {
    border-bottom: 1px solid $border-color;
}


.flex {
    display: -ms-flex;
    display:     flex;
}

.flex.column {
    flex-direction: column;
}

.flex.align-center {
    align-items: center;
}

.flex.wrap {
    flex-wrap: wrap;
}

.flex.mobile-column {
    @include mobile {
        flex-direction: column;
    }
}

.flex.mobile-column.align-center {
    @include mobile {
        text-align: center;
    }
}


.flexitem.fill {
    flex: 1;
}

.flexitem.mobile-first {
    @include mobile {
        order: -1;
    }
}


.MathJax[display="true"] {
    overflow: auto;
    padding: 0.75em 0.5em;
}


.highlight.flexitem {
    overflow-y: hidden;
}


.revise-item > p {
    display: inline;
}