Here is a list of classes that Tuicast uses. Use css/t-options.css
.t-bg-main — adds background of the main color defined by --theme-main-color option..t-bg-secondary — adds background of the secondary color defined by --theme-secondary-color option..t-bg-accent — adds background of the accent color defined by --theme-accent-color option..t-bg-additional-1 — adds background of the additional color defined by --theme-additional-color-1 option..t-bg-light — adds background of the light grey color defined by --theme-light-background option..t-bg-lighter — adds background of the lighter grey color defined by --theme-lighter-background option..t-bg-dark — adds background of the dark grey color defined by --theme-dark-background option..t-bg-darker — adds background of the darker grey color defined by --theme-darker-background option..t-color-main — adds main color defined by --theme-main-color option. .t-color-secondary — adds secondary color defined by --theme-secondary-color option..t-color-accent — adds secondary accent defined by --theme-accent-color option..t-color-additional-1 — adds additional color defined by --theme-additional-color option..t-color-light — adds light grey color defined by --theme-light-background option..t-color-dark — adds dark grey color defined by --theme-dark-background option..t-success— adds success background color defined by --success-color option..t-failure— adds error background color defined by --failure-color option..t-warning— adds warning background color defined by --warning-color option..t-v-margin-small — adds small equal vertical margins (both top and bottom) defined by --small-offset option.t-v-margin-medium — adds medium equal vertical margins (both top and bottom) defined by --medium-offset option.t-v-margin-large — adds large equal vertical margins (both top and bottom) defined by --large-offset option.t-v-margin-huge — adds larger equal vertical margins (both top and bottom) defined by --huge-offset option.t-v-margin-section — adds largest equal vertical margins (both top and bottom) designated for setting section intervals defined by --section-offset option. .t-top-margin-small — adds a small top margin defined by --small-offset option..t-top-margin-medium — adds a medium top margin defined by --medium-offset option..t-top-margin-large — adds a large top margin defined by --large-offset option..t-top-margin-huge — adds a larger top margin defined by --huge-offset option..t-top-margin-section — adds the largest top margin defined by --section-offset option..t-bottom-margin-small — adds a small bottom margin defined by --small-offset option.t-bottom-margin-medium — adds a medium bottom margin defined by --medium-offset option..t-bottom-margin-large — adds a large bottom margin defined by --large-offset option..t-bottom-margin-huge — adds a larger bottom margin defined by --huge-offset option..t-bottom-margin-section — adds the largest bottom margin defined by --section-offset option..t-padding — by default, adds medium equal paddings defined by --medium-offset option. Same as .t-medium-padding.t-padding-small — adds small equal paddings defined by --small-offset option..t-padding-medium — adds medium equal paddings defined by --medium-offset option..t-padding-large — adds large equal paddings defined by --large-offset option..t-padding-huge — adds larger equal paddings defined by --huge-offset option..t-padding-section — adds largest equal paddings defined by --section-offset option..t-no-padding — forcibly sets paddings to 0. uses !important.has-border — a required class to use .has-dark-border or .has-light-border classes alongside. Used to set border-radius according to --overall-border-radius option. By default, also adds a dark border of a --theme-dark-background color..has-dark-border — adds a dark-colored border of a --theme-dark-background color..has-light-border — adds a light-colored border of a --theme-light-background color..has-light-top-border — adds a top border of a --theme-light-background color..has-light-right-border — adds a right border of a --theme-light-background color..has-light-bottom-border — adds a bottom border of a --theme-light-background color..has-light-left-border — adds a left border of a --theme-light-background color..has-top-border or .has-dark-top-border — adds a top border of a --theme-dark-background color. .has-right-border or .has-dark-right-border — adds a right border of a --theme-dark-background color. .has-bottom-border or .has-dark-bottom-border — adds a bottom border of a --theme-dark-background color. .has-left-border or .has-dark-left-border — adds a left border of a --theme-dark-background color. .has-no-border-radius — forcibly sets border radius to 0. uses !important.has-no-border — forcibly sets border to none. uses !importantBe sure to use them only for block-type elements.
.t-w-320 — sets element's max-width to 320px..t-w-500 — sets element's max-width to 500px..t-w-25 — sets element's width to 25%..t-w-33 — sets element's width to 33%..t-w-50 — sets element's width to 50%..text-600 — limits the text wrapping block's width to 600px..block-centered — centers the block with auto margins..c600 — (centered text-600) is a short form of the previous two combined..text-centered — centers the text within its block container..text-alignleft — aligns the text to the left within its block container..text-alignright — aligns the text to the right within its block container..has-box-shadow — adds box-shadow defined by --overall-box-shadow option..has-no-box-shadow — forcibly sets box-shadow to none. uses !important.t-img-cover sets an image centered and cropped by its parent container size.t-text-underline-fine — dolor sit amet.t-text-underline-heavy — cumque deleniti.t-text-underline-regular — laboriosam.t-text-underline-dotted — cumque fuga.t-text-underline-dashed — quam suscipit?.t-text-highlight-light — exercitationem.t-text-highlight-dark — molestias.t-text-hint — Aspernatur.t-text-bordered — Accusantium.t-interval-small — adds a small vertical interval of --small-offset height..t-interval-medium — adds a medium vertical interval of --medium-offset height..t-interval-large — adds a large vertical interval of --large-offset height..t-interval-huge — adds a larger vertical interval of --huge-offset height..t-interval-section — adds the largest vertical interval of --section-offset height..t-separator-0 — places a fullwidth line divider with zero vertical margins..t-separator-small — places a fullwidth line divider with small vertical margins from --small-offsetoption..t-separator-medium — places a fullwidth line divider with medium vertical margins from --medium-offsetoption..t-separator-large — places a fullwidth line divider with large vertical margins from --large-offsetoption..t-separator-huge — places a fullwidth line divider with larger vertical margins from --huge-offsetoption..t-separator-section — places a fullwidth line divider with largest vertical margins from --section-offsetoption.