What are the bootstrap changes to the default style of HTML tags?

CSS Reset: Re-sets the default style for HTML tags.  (1) Reset the calculation method of the box model  * {box-sizing:border-box;}  (2) Reset the default font for all elements   14px/1.42857143 "Helvetica Neue"  (3) body {  margin:0;   Color: #333;    Background-color: #fff;}  (4) H1~h6 {font-size:xxpx;   margin-top:20px/10px;  margin-botton:10px;}  (5) A {color: #xxxxx;   Text-decoration:none;}

CSS layout Traps-the margin-top of child elements is out of bounds: if the parent element does not have a top border/margin, the margin-top of the first child element will be out of bounds! Best solution:. parent2:before {      content: '  ;      display:table;} The best solution for all child elements in the parent element due to the floating effect: Parent:after  {  content: '  ;  display:table;  Clear:both;}

Global CSS styles provided by 6.Boostrap--button-related style  hints: button-related styles can be used for button/input/a three elements  . BTN              Set the button's padding, margin, font, Border  --------------------------------------------------------------------  . Btn-default    Set the color of the button, background, border  bootstrap five common colors:  . btn-warning    the button for the warning color (orange-yellow)  . Btn-danger    Danger Color ( Red) button.  btn-info hint color (light blue) button. btn-success the button of the    success Color (green)  . btn-primary    button with base color (dark blue) Bootstrap four sizes:  . Btn-lg            Large button (Large)  default            default size  . BTN-SM        Small button (small)  . Btn-xs            Super Small button (extra small)

1. Global CSS style--pictures  . img-circle            border-radius:50%  . img-rounded        border-radius:6px;  . Img-thumbnail        Border padding  . img-responsive        max-width  Display

 2. Global CSS style--text. text-warning. text-success. Text-danger. Text-info- ------------------. Text-lowercase text-uppercase. Text-capitalize-------------------. Text-left. Text-center. Te Xt-right right-aligned. Text-justify (both ends) adjusts the alignment---------------------. bg-warning. bg-success. Bg-danger. Bg-info. bg-  Primary----------------------. Pull-left float:left;  . pull-right Float:right;          . clearfix Clear:both;-----------------------. Show Display:block; . hidden Display:none;  

table global style. Table          width   margin-bottom     . Table>td  . table-bordered      border:1px solid #ddd;  . table-condensed the        cell padding 8px to 5px, the content looks "compact"  . table-striped        striped table with a light background color added to the odd tr  . Table-hover when the            mouse hovers over the TR, add a light background color  . table-responsive        Responsive Table--the screen becomes hourly and a horizontal scrollbar appears--the class cannot be used for  <table>, can only be used on its parent element <Div> !  --------------------------------------------------------------  used in TR and TD class-- Webstorm is not prompted by default. The danger        background color is light red, and after hovering it turns dark red.        The warning background color is yellowish, and after hovering it turns dark yellow. Info            background is light blue, and it turns dark blue after hovering. Success        The background color is pale green and becomes dark green after hovering. Active        background color dimmed and turned dark gray after hover

What are the bootstrap changes to the default style of HTML tags?