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.letter-up {
    text-transform: capitalize;
}

.perspective {
    perspective: 600px;
}

.pre-3d {
    transform-style: preserve-3d;
}

.rows-ddd {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}

.addPoint {
    padding: 10 px;
    background - clip: content - box;
    background - origin: content - box;
}

.tap-heighlight {
    -webkit-tap-highlight-color: transparent;
}

.ddd {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-select {
    -moz-user-select: none; /*火狐*/
    -webkit-user-select: none; /*webkit览器*/
    -ms-user-select: none; /*IE10*/
    user-select: none;
}

.ta {
    touch-action: none;
}