Does bootstrap have builtin padding and margin classes?

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庸人自扰
庸人自扰 2020-12-25 09:57

Does Bootstrap have built-in padding and margin classes like pad-10, mar-left-10 or I have to add my own custom classes? For example, similar to th

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  • 2020-12-25 10:32

    This is taken from the docs and it works very well. Here is the link

    • m - for classes that set margin
    • p - for classes that set padding

    Where sides are one of:

    • t - for classes that set margin-top or padding-top
    • b - for classes that set margin-bottom or padding-bottom
    • l - for classes that set margin-left or padding-left
    • r - for classes that set margin-right or padding-right

    if you want to give margin to the left use mt-x where x stands for [1,2,3,4,5]

    same for padding

    example be like

    <div class = "mt-5"></div>
    <div class = "pt-5"></div>
    

    Use only p-x or m-x for getting padding and margin of x from all sides.

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  • 2020-12-25 10:33

    I would like to give an example which I tried by understanding above documentation and works correctly. If you wish to apply 25% padding on left and right sides medium screen size then please use px-md-1. It works as desired and can similarly follow for other screen sizes. :)

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  • 2020-12-25 10:35

    Bootstrap 4 has a new notation for margin and padding classes. Refer to Bootstrap 4.0 Documentation - Spacing.

    From the documentation:

    Notation

    Spacing utilities that apply to all breakpoints, from xs to xl, have no breakpoint abbreviation in them. This is because those classes are applied from min-width: 0 and up, and thus are not bound by a media query. The remaining breakpoints, however, do include a breakpoint abbreviation.

    The classes are named using the format {property}{sides}-{size} for xs and {property}{sides}-{breakpoint}-{size} for sm, md, lg, and xl.

    Examples

    .mt-0 { margin-top: 0 !important; }

    .p-3 { padding: $spacer !important; }

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  • 2020-12-25 10:36

    These spacing notations are quite effective in custom changes. You can also use negative values there too. Official

    Though we can use them whenever we want. Bootstrap Spacing

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  • 2020-12-25 10:38

    For bootstrap 4 we have new classes named with following notation

    m - for classes that set margin
    p - for classes that set padding
    

    Specify Top, bottom,left, right, left & right, top & bottom using below letters

    t - for classes that set margin-top (mt) or padding-top (pt)
    b - for classes that set margin-bottom or padding-bottom
    l - for classes that set margin-left or padding-left
    r - for classes that set margin-right or padding-right
    x - for classes that set both *-left and *-right
    y - for classes that set both *-top and *-bottom
    

    Specify size using following numbers

    0 - for classes that eliminate the margin or padding by setting it to 0
    1 - (by default) for classes that set the margin or padding to $spacer * .25
    2 - (by default) for classes that set the margin or padding to $spacer * .5
    3 - (by default) for classes that set the margin or padding to $spacer
    4 - (by default) for classes that set the margin or padding to $spacer * 1.5
    5 - (by default) for classes that set the margin or padding to $spacer * 3
    

    Actual Code from bootstrap 4 css file

    .mt-0 {
      margin-top: 0 !important;
    }
    
    .ml-1 {
      margin-left: ($spacer * .25) !important;
    }
    
    .px-2 {
      padding-left: ($spacer * .5) !important;
      padding-right: ($spacer * .5) !important;
    }
    
    .p-3 {
      padding: $spacer !important;
    }
    

    Usage

    So when you need some padding left just add any class from pl-0 to pl-5 based on your need

    If you need margin on top just add any class from mt-0 to mt-5 based on your need

    <div class="col-sm-6 mt-5"> this div will have margin top added </div>
    <div class="col-sm-6 pl-5"> this div will have padding left added </div>
    

    Bootstrap 4 CDN

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  • 2020-12-25 10:40

    I'm adding this code to my Bootstrap3.3 project with the same grid columns breakpoints, based with the @guest answer. Before I have used the Bootstrap 4 padding and margins helper it seens to be a good choice.

    /*Margin and Padding helpers*/
    /*xs*/
    .p-xs { padding: .25em; }
    .p-x-xs { padding: 0 .25em; }
    .p-y-xs { padding: .25em 0 ; }
    .p-t-xs { padding-top: .25em; }
    .p-r-xs { padding-right: .25em; }
    .p-b-xs { padding-bottom: .25em; }
    .p-l-xs { padding-left: .25em; }
    .m-xs { margin: .25em; }
    .m-x-xs { margin: 0 .25em; }
    .m-y-xs { margin: .25em 0 ; }
    .m-r-xs { margin-right: .25em; }
    .m-l-xs { margin-left: .25em; }
    .m-t-xs { margin-top: .25em; }
    .m-b-xs { margin-bottom: .25em; }
    /*sm*/
    @media (min-width:768px){
    /*sm*/
    .p-sm { padding: .5em; }
    .p-x-sm { padding: 0 .5em; }
    .p-y-sm { padding: .5em 0 ; }
    .p-t-sm { padding-top: .5em; }
    .p-r-sm { padding-right: .5em; }
    .p-b-sm { padding-bottom: .5em; }
    .p-l-sm { padding-left: .5em; }
    .m-sm { margin: .5em; }
    .m-x-sm { margin: 0 .5em; }
    .m-y-sm { margin: .5em 0 ; }
    .m-t-sm { margin-top: .5em; }
    .m-r-sm { margin-right: .5em; }
    .m-b-sm { margin-bottom: .5em; }
    .m-l-sm { margin-left: .5em; }
    }
    
    /*md*/
    @media (min-width: 992px){
    .p-md { padding: 1em; }
    .p-x-md { padding: 0 1em; }
    .p-y-md { padding: 1em 0; }
    .p-t-md { padding-top: 1em; }
    .p-r-md { padding-right: 1em; }
    .p-b-md { padding-bottom: 1em; }
    .p-l-md { padding-left: 1em; }
    .m-md { margin: 1em; }
    .m-x-md { margin: 0 1em; }
    .m-y-md { margin: 1em 0 ; }
    .m-t-md { margin-top: 1em; }
    .m-r-md { margin-right: 1em; }
    .m-b-md { margin-bottom: 1em; }
    .m-l-md { margin-left: 1em; }
    }
    
    /*lg*/
    @media (min-width: 1200px){
    .p-lg { padding: 1.5em; }
    .p-x-lg { padding: 0 1.5em; }
    .p-y-lg { padding: 1.5em 0; }
    .p-t-lg { padding-top: 1.5em; }
    .p-r-lg { padding-right: 1.5em; }
    .p-b-lg { padding-bottom: 1.5em; }
    .p-l-lg { padding-left: 1.5em; }
    .m-lg { margin: 1.5em; }
    .m-x-lg { margin: 0 1.5em; }
    .m-y-lg { margin: 1.5em 0; }
    .m-t-lg { margin-top: 1.5em; }
    .m-r-lg { margin-right: 1.5em; }
    .m-b-lg { margin-bottom: 1.5em; }
    .m-l-lg { margin-left: 1.5em; }
    }
    /*xl*/
    .p-xl { padding: 3em; }
    .p-x-xl { padding: 0 3em; }
    .p-y-xl { padding: 3em 0 ; }
    .p-t-xl { padding-top: 3em; }
    .p-r-xl { padding-right: 3em; }
    .p-b-xl { padding-bottom: 3em; }
    .p-l-xl { padding-left: 3em; }
    .m-xl { margin: 3em; }
    .m-x-xl { margin: 0 3em; }
    .m-y-xl { margin: 3em 0; }
    .m-t-xl { margin-top: 3em; }
    .m-r-xl { margin-right: 3em; }
    .m-b-xl { margin-bottom: 3em; }
    .m-l-xl { margin-left: 3em; }``
    
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