CSS - how to overflow from div to full width of screen -


i have containing div, use part of responsive grid. expands maximum width allow 1280px, margins appear large devices. here's css + bit of less.

.container {     margin-left:auto;     margin-right:auto;     max-width:1280px;     padding:0 30px;     width:100%;      &:extend(.clearfix all); }

however on occasions i'd overflow sideways - lets have background image or colour needs full width. i'm not great @ css - possible achieve want?

the obvious solution close container...have full width div open new container. title 'container' class...not absolute requirement hold everything @ same time.

in instance apply background color full width div , don't need apply color internal, restricted div.

* {    -webkit-box-sizing: border-box;    -moz-box-sizing: border-box;    box-sizing: border-box;    margin: 0;    padding: 0;  }  .container {    max-width: 80%;    border: 1px solid red;    margin: 0 auto;  }  .fullwidth {    background: orange;  }  header {    height: 50px;    background: #663399;  }  .mydiv {    /* background: orange; */    min-height: 50px;  }  footer {    height: 50px;    background: #bada55;  }
<div class="container">    <header></header>  </div>  <div class="fullwidth">    <div class="container">      <div class="mydiv">        <p>lorem ipsum dolor sit amet, consectetur adipisicing elit. ipsum illum veniam in delectus corrupti autem magnam. tenetur ducimus provident nisi aut esse aliquid accusamus quas.</p>      </div>      <div class="mydiv">        <p>lorem ipsum dolor sit amet, consectetur adipisicing elit. ipsum illum veniam in delectus corrupti autem magnam. tenetur ducimus provident nisi aut esse aliquid accusamus quas.</p>      </div>    </div>  </div>  <div class="container">    <footer></footer>  </div>

however, single encompassing container if after background use pseudo-element so:

* {    -webkit-box-sizing: border-box;    -moz-box-sizing: border-box;    box-sizing: border-box;    margin: 0;    padding: 0;  }  body {    overflow-x: hidden;  }  .container {    max-width: 80%;    border: 1px solid red;    margin: 0 auto;  }  header {    height: 50px;    background: #663399;  }  .mydiv {    height: 100px;    position: relative;  }  .mydiv:after {    content: "";    position: absolute;    height: 100%;    top: 0;    left: 50%;    transform: translatex(-50%);    width: 100vw;    background: orange;    z-index: -1;  }  footer {    height: 50px;    background: #bada55;  }
<div class="container">    <header></header>    <div class="mydiv">      <p>lorem ipsum dolor sit amet, consectetur adipisicing elit. ipsum illum veniam in delectus corrupti autem magnam. tenetur ducimus provident nisi aut esse aliquid accusamus quas.</p>    </div>    <footer></footer>  </div>

support vw ie9+ - see http://caniuse.com/#feat=viewport-units

there cases actual content required in 100% wide div , container cannot opened/closed @ (perhaps retrofit slider).

in cases, where height of new div known same technique can used position 100% viewport wide:

* {    margin: 0;    padding: 0;  }  body {    overflow-x: hidden;  }  .container {    max-width: 80%;    border: 1px solid red;    margin: 0 auto;  }  header {    height: 50px;    background: #663399;  }  .mydiv {    height: 100px;    position: relative;  }  .myslider {    position: absolute;    height: 100%;    top: 0;    left: 50%;    transform: translatex(-50%);    width: 100vw;    background: orange;  }  footer {    height: 50px;    background: #bada55;  }
<div class="container">    <header></header>    <div class="mydiv">      <div class="myslider">        <p>lorem ipsum dolor sit amet, consectetur adipisicing elit. ipsum illum veniam in delectus corrupti autem magnam. tenetur ducimus provident nisi aut esse aliquid accusamus quas.</p>      </div>    </div>    <footer></footer>  </div>

jsfiddle demo

note: there instances 100vw can cause overflow , horizontal scrollbar might appear. overflow-x:hidden on <body> can attend that..it should not issue because else still inside container.


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